<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019dab7b-3d62-7d8c-80b6-26f6ede2c914,g:49762336-d8cb-4d63-b648-0e0c3b74337b-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="sncy-20260331.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019dab7b-3e51-7d5d-9917-3dcc7188e47f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_us-gaap_Goodwill_019dab7b-3e51-7d5d-9917-3dcc7188e47f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019dab7b-3e51-70cb-9e7f-9ea1b5b63571" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019dab7b-3e51-70cb-9e7f-9ea1b5b63571" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019dab7b-3e51-7ea2-9c87-34119ad4e667" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019dab7b-3e51-7ea2-9c87-34119ad4e667" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_AircraftLeaseDeposits_019dab7b-3e51-7fac-ba5d-51e181b282ab" xlink:href="sncy-20260331.xsd#sncy_AircraftLeaseDeposits"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_sncy_AircraftLeaseDeposits_019dab7b-3e51-7fac-ba5d-51e181b282ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAssetsNoncurrent_019dab7b-3e51-7642-bc15-fd1d700d494c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAssetsNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_us-gaap_DepositsAssetsNoncurrent_019dab7b-3e51-7642-bc15-fd1d700d494c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_019dab7b-3e51-7923-bf3a-0ae3a3379cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7d93-8920-0a315ddd395d" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_019dab7b-3e51-7923-bf3a-0ae3a3379cdd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019dab7b-3e51-749d-8416-1c865dee82c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_AccountsPayableCurrent_019dab7b-3e51-749d-8416-1c865dee82c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019dab7b-3e51-7cfd-ba12-3fc05ab9adf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019dab7b-3e51-7cfd-ba12-3fc05ab9adf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019dab7b-3e51-726f-b467-5b561ff6e2d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019dab7b-3e51-726f-b467-5b561ff6e2d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_AirTrafficLiabilitiesCurrent_019dab7b-3e51-7bc7-b75a-a381f7ace96e" xlink:href="sncy-20260331.xsd#sncy_AirTrafficLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_sncy_AirTrafficLiabilitiesCurrent_019dab7b-3e51-7bc7-b75a-a381f7ace96e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_019dab7b-3e51-7af7-b681-b035bb4d95b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_019dab7b-3e51-7af7-b681-b035bb4d95b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LoyaltyProgramLiabilitiesCurrent_019dab7b-3e51-727f-b250-421951e250c4" xlink:href="sncy-20260331.xsd#sncy_LoyaltyProgramLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_sncy_LoyaltyProgramLiabilitiesCurrent_019dab7b-3e51-727f-b250-421951e250c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019dab7b-3e51-7824-a722-06f0ffc94557" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019dab7b-3e51-7824-a722-06f0ffc94557" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019dab7b-3e51-7ef6-9091-96144d0b450f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_LongTermDebtCurrent_019dab7b-3e51-7ef6-9091-96144d0b450f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_019dab7b-3e51-7750-b220-8ce755c03a71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-7275-b33b-5862798e3205" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_019dab7b-3e51-7750-b220-8ce755c03a71" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019dab7b-3e51-790a-a155-56296489bcd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019dab7b-3e51-7f7f-bbff-041ce043bbeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019dab7b-3e51-790a-a155-56296489bcd7" xlink:to="loc_us-gaap_AssetsCurrent_019dab7b-3e51-7f7f-bbff-041ce043bbeb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019dab7b-3e51-7beb-a651-e4d359bac2f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019dab7b-3e51-790a-a155-56296489bcd7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019dab7b-3e51-7beb-a651-e4d359bac2f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7479-a8f0-a6a6e7d30732" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019dab7b-3e51-790a-a155-56296489bcd7" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019dab7b-3e51-7479-a8f0-a6a6e7d30732" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019dab7b-3e51-79b4-ba94-3ecca938c5a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-70f3-a7de-339766cf85a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019dab7b-3e51-79b4-ba94-3ecca938c5a4" xlink:to="loc_us-gaap_LiabilitiesCurrent_019dab7b-3e51-70f3-a7de-339766cf85a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-77db-9ed6-2e2edfb4e7ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019dab7b-3e51-79b4-ba94-3ecca938c5a4" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-77db-9ed6-2e2edfb4e7ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_019dab7b-3e51-75fa-b135-2b554418313f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019dab7b-3e51-7ea6-a0e2-74c2a7afaaee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_019dab7b-3e51-75fa-b135-2b554418313f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019dab7b-3e51-7ea6-a0e2-74c2a7afaaee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_019dab7b-3e51-7f69-9941-b957bd8ee20d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_019dab7b-3e51-75fa-b135-2b554418313f" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_019dab7b-3e51-7f69-9941-b957bd8ee20d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019dab7b-3e51-7eb8-8b48-113fa0314eb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019dab7b-3e51-7a9b-85f7-3831eaf9010f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019dab7b-3e51-7eb8-8b48-113fa0314eb3" xlink:to="loc_us-gaap_Liabilities_019dab7b-3e51-7a9b-85f7-3831eaf9010f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019dab7b-3e51-704f-bcfb-6a84a4b7af4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019dab7b-3e51-7eb8-8b48-113fa0314eb3" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019dab7b-3e51-704f-bcfb-6a84a4b7af4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019dab7b-3e51-710c-869b-7ac96dbef473" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019dab7b-3e51-7eb8-8b48-113fa0314eb3" xlink:to="loc_us-gaap_StockholdersEquity_019dab7b-3e51-710c-869b-7ac96dbef473" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019dab7b-3e51-7aa3-893c-efd98713481f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_CommonStockValue_019dab7b-3e51-7aa3-893c-efd98713481f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_019dab7b-3e51-7ee2-9aa7-50feaa27a3a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_PreferredStockValue_019dab7b-3e51-7ee2-9aa7-50feaa27a3a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_019dab7b-3e51-7965-ad9c-36f08a4a2bed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_TreasuryStockCommonValue_019dab7b-3e51-7965-ad9c-36f08a4a2bed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_019dab7b-3e51-7bc8-bbdd-2adb8723e00d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019dab7b-3e51-7bc8-bbdd-2adb8723e00d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019dab7b-3e51-74e5-8e63-b977c38dc618" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019dab7b-3e51-74e5-8e63-b977c38dc618" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7e52-a6bc-c3f6c2317edf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019dab7b-3e51-7f53-8c74-12f18fcd7c49" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7e52-a6bc-c3f6c2317edf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019dab7b-3e51-78d4-858f-4abfe3aa9867" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019dab7b-3e51-78d4-858f-4abfe3aa9867" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_019dab7b-3e51-79c7-a3a9-9048594de9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_RestrictedCashCurrent_019dab7b-3e51-79c7-a3a9-9048594de9e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_019dab7b-3e51-7892-a7d6-170f2ca627db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermInvestments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_ShortTermInvestments_019dab7b-3e51-7892-a7d6-170f2ca627db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019dab7b-3e51-7692-90ba-ce1fb0742f6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019dab7b-3e51-7692-90ba-ce1fb0742f6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAssetsCurrent_019dab7b-3e51-7322-a04d-7362938b36f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_DepositsAssetsCurrent_019dab7b-3e51-7322-a04d-7362938b36f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019dab7b-3e51-77b2-ba0a-3df1eed47aa1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_InventoryNet_019dab7b-3e51-77b2-ba0a-3df1eed47aa1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_019dab7b-3e51-7f17-bf12-6d32a08aca14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_019dab7b-3e51-7f17-bf12-6d32a08aca14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019dab7b-3e51-7796-b483-b4b8868608a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019dab7b-3e51-71e4-bfd8-7389f67cf43c" xlink:to="loc_us-gaap_OtherAssetsCurrent_019dab7b-3e51-7796-b483-b4b8868608a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019dab7b-3e51-7471-8f1f-ca044f4f02d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019dab7b-3e51-7471-8f1f-ca044f4f02d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LoyaltyProgramLiabilitiesNoncurrent_019dab7b-3e51-7dcb-a40b-b883c9a4caed" xlink:href="sncy-20260331.xsd#sncy_LoyaltyProgramLiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_sncy_LoyaltyProgramLiabilitiesNoncurrent_019dab7b-3e51-7dcb-a40b-b883c9a4caed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019dab7b-3e51-7623-bde9-bf08ca1d77b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019dab7b-3e51-7623-bde9-bf08ca1d77b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019dab7b-3e51-77b5-892e-26b74c7e0dcb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019dab7b-3e51-77b5-892e-26b74c7e0dcb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_IncomeTaxesReceivableAgreementNoncurrent_019dab7b-3e51-7834-a9b8-595946196c1a" xlink:href="sncy-20260331.xsd#sncy_IncomeTaxesReceivableAgreementNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_sncy_IncomeTaxesReceivableAgreementNoncurrent_019dab7b-3e51-7834-a9b8-595946196c1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019dab7b-3e51-7e2c-90b8-ff3f3fe46aba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019dab7b-3e51-7e2c-90b8-ff3f3fe46aba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019dab7b-3e51-72d9-8264-2ca14efa94a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019dab7b-3e51-703f-95a1-9f63d6609318" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019dab7b-3e51-72d9-8264-2ca14efa94a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019dab7b-3e51-7987-844e-34a3980d551d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_019dab7b-3e51-75c5-a644-40a8b3f1fc3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019dab7b-3e51-7987-844e-34a3980d551d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_019dab7b-3e51-75c5-a644-40a8b3f1fc3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_019dab7b-3e51-7ad4-8131-9888b3355c4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019dab7b-3e51-7987-844e-34a3980d551d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_019dab7b-3e51-7ad4-8131-9888b3355c4b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="sncy-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019dab7b-3e51-7ee9-9329-8ca46a470c0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019dab7b-3e51-7ee9-9329-8ca46a470c0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019dab7b-3e51-7e95-a8d3-ec5f75b85a37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019dab7b-3e51-7e95-a8d3-ec5f75b85a37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_GroundHandlingExpense_019dab7b-3e51-7cb9-aa4b-3ae61c019f7d" xlink:href="sncy-20260331.xsd#sncy_GroundHandlingExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_sncy_GroundHandlingExpense_019dab7b-3e51-7cb9-aa4b-3ae61c019f7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019dab7b-3e51-728a-99c9-a8202c3ad62a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019dab7b-3e51-728a-99c9-a8202c3ad62a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandingFeesAndOtherRentals_019dab7b-3e51-7c73-abc3-a2354b997a76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LandingFeesAndOtherRentals"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_LandingFeesAndOtherRentals_019dab7b-3e51-7c73-abc3-a2354b997a76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_019dab7b-3e51-7e24-9675-7eb6cef411f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AircraftMaintenanceMaterialsAndRepairs"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_019dab7b-3e51-7e24-9675-7eb6cef411f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemNetGainLoss_019dab7b-3e51-7084-a441-7ace39c9ce58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnusualOrInfrequentItemNetGainLoss"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_UnusualOrInfrequentItemNetGainLoss_019dab7b-3e51-7084-a441-7ace39c9ce58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_019dab7b-3e51-79c7-a1eb-4adcc6bff662" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_019dab7b-3e51-79c7-a1eb-4adcc6bff662" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_019dab7b-3e51-7a15-94cd-4821da572162" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FuelCosts"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7711-a56d-a17dc2d90927" xlink:to="loc_us-gaap_FuelCosts_019dab7b-3e51-7a15-94cd-4821da572162" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fca-9db8-a3e4c2bf6c49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_019dab7b-3e51-73e2-ba03-6de207a9bd57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fca-9db8-a3e4c2bf6c49" xlink:to="loc_us-gaap_InvestmentIncomeInterest_019dab7b-3e51-73e2-ba03-6de207a9bd57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019dab7b-3e51-71ac-8db0-889cf8466194" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fca-9db8-a3e4c2bf6c49" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019dab7b-3e51-71ac-8db0-889cf8466194" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019dab7b-3e51-7599-92e5-b4c6051f6c1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fca-9db8-a3e4c2bf6c49" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019dab7b-3e51-7599-92e5-b4c6051f6c1b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-7bb1-a55c-544447a159d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019dab7b-3e51-7322-b81b-d27cb310e81b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-7bb1-a55c-544447a159d8" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019dab7b-3e51-7322-b81b-d27cb310e81b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019dab7b-3e51-7f8f-95b3-7dd1bdcd4935" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-7bb1-a55c-544447a159d8" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019dab7b-3e51-7f8f-95b3-7dd1bdcd4935" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019dab7b-3e51-75b7-bef1-fd38fe057af5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019dab7b-3e51-717e-b70b-48f67bff13e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019dab7b-3e51-75b7-bef1-fd38fe057af5" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019dab7b-3e51-717e-b70b-48f67bff13e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7739-9270-c293151234ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019dab7b-3e51-75b7-bef1-fd38fe057af5" xlink:to="loc_us-gaap_CostsAndExpenses_019dab7b-3e51-7739-9270-c293151234ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019dab7b-3e51-75c0-972b-31729ea02992" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019dab7b-3e51-7b77-b2ce-f67223fe6885" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019dab7b-3e51-75c0-972b-31729ea02992" xlink:to="loc_us-gaap_OperatingIncomeLoss_019dab7b-3e51-7b77-b2ce-f67223fe6885" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fc3-b171-0235dca289ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019dab7b-3e51-75c0-972b-31729ea02992" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019dab7b-3e51-7fc3-b171-0235dca289ee" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" xlink:type="simple" xlink:href="sncy-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7287-81db-a9f3e38acdf5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_019dab7b-3e51-71a9-b9f9-f4ecdf241caf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7287-81db-a9f3e38acdf5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_019dab7b-3e51-71a9-b9f9-f4ecdf241caf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019dab7b-3e51-78d2-8561-4a82b2536140" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-78ba-b16b-cbb29993ed2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019dab7b-3e51-78d2-8561-4a82b2536140" xlink:to="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-78ba-b16b-cbb29993ed2a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7cf9-8c2d-d3e41a83c427" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019dab7b-3e51-78d2-8561-4a82b2536140" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019dab7b-3e51-7cf9-8c2d-d3e41a83c427" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="sncy-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3f2c-7b80-8f2b-f75f2da98a6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019dab7b-3f2c-759a-b701-cfdca589fb84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3f2c-7b80-8f2b-f75f2da98a6b" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019dab7b-3f2c-759a-b701-cfdca589fb84" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_019dab7b-3f2c-7d87-a94b-24b3d3ae0ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3f2c-7b80-8f2b-f75f2da98a6b" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_019dab7b-3f2c-7d87-a94b-24b3d3ae0ebc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019dab7b-3f2c-71a2-bff4-9cfb69be988d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3f2c-7b80-8f2b-f75f2da98a6b" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019dab7b-3f2c-71a2-bff4-9cfb69be988d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019dab7b-3f2c-79b8-a298-1ae113d05864" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3f2c-7b80-8f2b-f75f2da98a6b" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019dab7b-3f2c-79b8-a298-1ae113d05864" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-7f38-83ee-082bd006c93c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_NetIncomeLoss_019dab7b-3e51-7f38-83ee-082bd006c93c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019dab7b-3e51-73cc-9181-fb29bd340f21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019dab7b-3e51-73cc-9181-fb29bd340f21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019dab7b-3e51-767e-92dd-da3dc129643d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019dab7b-3e51-767e-92dd-da3dc129643d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019dab7b-3f2c-7dab-924f-9806bfaa9b47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019dab7b-3f2c-7dab-924f-9806bfaa9b47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019dab7b-3f2c-7d31-99df-1e1001eef64f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019dab7b-3f2c-7d31-99df-1e1001eef64f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019dab7b-3f2c-77d6-9098-c686c14a85fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019dab7b-3f2c-77d6-9098-c686c14a85fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_019dab7b-3f2c-7a30-8647-b73fe7e1103b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_019dab7b-3f2c-7a30-8647-b73fe7e1103b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_IncreaseDecreaseInLessorMaintenanceDeposits_019dab7b-3f2c-7286-a372-19978008b632" xlink:href="sncy-20260331.xsd#sncy_IncreaseDecreaseInLessorMaintenanceDeposits"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_sncy_IncreaseDecreaseInLessorMaintenanceDeposits_019dab7b-3f2c-7286-a372-19978008b632" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_019dab7b-3f2c-701e-9101-77f354f99628" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_019dab7b-3f2c-701e-9101-77f354f99628" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019dab7b-3f2c-7b22-8205-3b88aeb633f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019dab7b-3f2c-7b22-8205-3b88aeb633f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_019dab7b-3f2c-759d-9f8c-2c34a2d1ef0a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedTaxesPayable"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_019dab7b-3f2c-759d-9f8c-2c34a2d1ef0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_IncreaseDecreaseInAirTrafficLiabilities_019dab7b-3f2c-72be-8e77-4803383871db" xlink:href="sncy-20260331.xsd#sncy_IncreaseDecreaseInAirTrafficLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_sncy_IncreaseDecreaseInAirTrafficLiabilities_019dab7b-3f2c-72be-8e77-4803383871db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_IncreaseDecreaseInLoyaltyProgramLiabilities_019dab7b-3f2c-7959-a7c7-1a695550f77c" xlink:href="sncy-20260331.xsd#sncy_IncreaseDecreaseInLoyaltyProgramLiabilities"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_sncy_IncreaseDecreaseInLoyaltyProgramLiabilities_019dab7b-3f2c-7959-a7c7-1a695550f77c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_IncreaseDecreaseInOperatingLeaseLiabilities_019dab7b-3f2c-767e-acf6-891930ed85c5" xlink:href="sncy-20260331.xsd#sncy_IncreaseDecreaseInOperatingLeaseLiabilities"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_sncy_IncreaseDecreaseInOperatingLeaseLiabilities_019dab7b-3f2c-767e-acf6-891930ed85c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019dab7b-3f2c-73ce-ae8d-b7c824637195" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7aa6-a391-d1d2b4059a53" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019dab7b-3f2c-73ce-ae8d-b7c824637195" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019dab7b-3e51-7bc5-a283-5b30780335d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7c20-8c7f-6fe9f4788be5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019dab7b-3e51-7bc5-a283-5b30780335d1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019dab7b-3e51-7c20-8c7f-6fe9f4788be5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3e51-7541-83ee-163b98a1b1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019dab7b-3e51-7bc5-a283-5b30780335d1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3e51-7541-83ee-163b98a1b1fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3e51-7d94-96b0-d27f8aca2b9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019dab7b-3e51-7bc5-a283-5b30780335d1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019dab7b-3e51-7d94-96b0-d27f8aca2b9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3f2c-71c5-92ef-b66470d36f5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019dab7b-3f2c-7d86-8654-efbf130fb47c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3f2c-71c5-92ef-b66470d36f5a" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019dab7b-3f2c-7d86-8654-efbf130fb47c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019dab7b-3f2c-7003-8d20-33ad25fb7657" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3f2c-71c5-92ef-b66470d36f5a" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019dab7b-3f2c-7003-8d20-33ad25fb7657" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_019dab7b-3f2c-76e3-9807-e51356b0ad01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireInvestments"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3f2c-71c5-92ef-b66470d36f5a" xlink:to="loc_us-gaap_PaymentsToAcquireInvestments_019dab7b-3f2c-76e3-9807-e51356b0ad01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_ProceedsFromMaturityOfInvestments_019dab7b-3f2c-7ca0-8a27-c3b02fae411b" xlink:href="sncy-20260331.xsd#sncy_ProceedsFromMaturityOfInvestments"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019dab7b-3f2c-71c5-92ef-b66470d36f5a" xlink:to="loc_sncy_ProceedsFromMaturityOfInvestments_019dab7b-3f2c-7ca0-8a27-c3b02fae411b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSParentheticals" xlink:type="simple" xlink:href="sncy-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSParentheticals"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSParentheticals" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019dab7b-3f2c-7bdd-a9de-27734a245ae0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_019dab7b-3f2c-7512-aaf0-b1252e9d73f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019dab7b-3f2c-7bdd-a9de-27734a245ae0" xlink:to="loc_us-gaap_RestrictedCashCurrent_019dab7b-3f2c-7512-aaf0-b1252e9d73f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019dab7b-3f2c-7b4f-aa42-41358746fe30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019dab7b-3f2c-7bdd-a9de-27734a245ae0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019dab7b-3f2c-7b4f-aa42-41358746fe30" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/EARNINGSPERSHAREScheduleofEarningsPerShareBasicandDilutedDetails" xlink:type="simple" xlink:href="sncy-20260331.xsd#EARNINGSPERSHAREScheduleofEarningsPerShareBasicandDilutedDetails"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/EARNINGSPERSHAREScheduleofEarningsPerShareBasicandDilutedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019dab7b-3f2c-7f8f-a087-13bcc4372c10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_019dab7b-3f2c-7f36-823d-7d72dc932639" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019dab7b-3f2c-7f8f-a087-13bcc4372c10" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_019dab7b-3f2c-7f36-823d-7d72dc932639" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019dab7b-3f2c-7bf3-9331-fc76fcd73b00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019dab7b-3f2c-7f8f-a087-13bcc4372c10" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019dab7b-3f2c-7bf3-9331-fc76fcd73b00" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/AIRCRAFTDepreciationAmortizationandRentExpenseonAircraftDetails" xlink:type="simple" xlink:href="sncy-20260331.xsd#AIRCRAFTDepreciationAmortizationandRentExpenseonAircraftDetails"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/AIRCRAFTDepreciationAmortizationandRentExpenseonAircraftDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DepreciationAmortizationAndRentalExpenses_019dab7b-3f2d-75ce-81e7-ed81f7be67a1" xlink:href="sncy-20260331.xsd#sncy_DepreciationAmortizationAndRentalExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_019dab7b-3f2d-7b73-83af-143b825a51c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_sncy_DepreciationAmortizationAndRentalExpenses_019dab7b-3f2d-75ce-81e7-ed81f7be67a1" xlink:to="loc_us-gaap_Depreciation_019dab7b-3f2d-7b73-83af-143b825a51c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_019dab7b-3f2d-7900-84ca-d3855db8e0db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_sncy_DepreciationAmortizationAndRentalExpenses_019dab7b-3f2d-75ce-81e7-ed81f7be67a1" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_019dab7b-3f2d-7900-84ca-d3855db8e0db" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/DEBTFutureMaturitiesoftheOutstandingDebtDetails" xlink:type="simple" xlink:href="sncy-20260331.xsd#DEBTFutureMaturitiesoftheOutstandingDebtDetails"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/DEBTFutureMaturitiesoftheOutstandingDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019dab7b-3f2d-7852-b4b1-cbcccbedd500" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearTwo_019dab7b-3f2d-7c8f-9765-03a3fa7a85c2" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019dab7b-3f2d-7852-b4b1-cbcccbedd500" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearTwo_019dab7b-3f2d-7c8f-9765-03a3fa7a85c2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearTwo_019dab7b-3f2d-7c9a-80b9-3688fe1d17b1" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearTwo"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019dab7b-3f2d-7852-b4b1-cbcccbedd500" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearTwo_019dab7b-3f2d-7c9a-80b9-3688fe1d17b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear_019dab7b-3f2d-7de1-b8b3-dc54b2bc09b9" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear_019dab7b-3f2d-7de1-b8b3-dc54b2bc09b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearOne_019dab7b-3f2d-7228-b029-c1af154c1bfd" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearOne"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearOne_019dab7b-3f2d-7228-b029-c1af154c1bfd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearTwo_019dab7b-3f2d-746b-9981-9fc916c72cf1" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearTwo_019dab7b-3f2d-746b-9981-9fc916c72cf1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearThree_019dab7b-3f2d-73dd-a637-d128dd5e344c" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearThree_019dab7b-3f2d-73dd-a637-d128dd5e344c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearFour_019dab7b-3f2d-7133-ae69-8dbdb40e167f" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearFour_019dab7b-3f2d-7133-ae69-8dbdb40e167f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour_019dab7b-3f2d-7c15-9efc-544a28a4e242" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-7a04-99ed-952c762d82bb" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour_019dab7b-3f2d-7c15-9efc-544a28a4e242" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019dab7b-3f2d-749e-a151-3071451e6e31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearOne_019dab7b-3f2d-7aa4-a7c2-abf3baf315e8" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearOne"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019dab7b-3f2d-749e-a151-3071451e6e31" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearOne_019dab7b-3f2d-7aa4-a7c2-abf3baf315e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearOne_019dab7b-3f2d-7c4f-b3ad-3b633c0c334b" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearOne"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019dab7b-3f2d-749e-a151-3071451e6e31" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearOne_019dab7b-3f2d-7c4f-b3ad-3b633c0c334b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019dab7b-3f2d-70ef-b8c0-652d20de671a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear_019dab7b-3f2d-79be-81de-c79bca95257d" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019dab7b-3f2d-70ef-b8c0-652d20de671a" xlink:to="loc_sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear_019dab7b-3f2d-79be-81de-c79bca95257d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear_019dab7b-3f2d-708e-b36d-5bf94be3fdc5" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019dab7b-3f2d-70ef-b8c0-652d20de671a" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationReminderOfFiscalYear_019dab7b-3f2d-708e-b36d-5bf94be3fdc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019dab7b-3f2d-76bc-be77-e4003f19ed0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019dab7b-3f2d-76bc-be77-e4003f19ed0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019dab7b-3f2d-7a53-95f9-c0fce9ae8936" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019dab7b-3f2d-7a53-95f9-c0fce9ae8936" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019dab7b-3f2d-7e78-ab99-93f9dadc3f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019dab7b-3f2d-7e78-ab99-93f9dadc3f6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019dab7b-3f2d-7e96-865b-f1a505cfe723" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019dab7b-3f2d-7e96-865b-f1a505cfe723" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019dab7b-3f2d-7247-84af-fdcec91e0865" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019dab7b-3f2d-7247-84af-fdcec91e0865" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_019dab7b-3f2d-7195-acbe-265bf53ac6e3" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-77e8-8a53-ba04f50cf0fb" xlink:to="loc_sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_019dab7b-3f2d-7195-acbe-265bf53ac6e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_019dab7b-3f2d-72bb-9ece-283788271dd3" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityAfterYearFour_019dab7b-3f2d-7cac-8490-4d9669f28dfa" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityAfterYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_019dab7b-3f2d-72bb-9ece-283788271dd3" xlink:to="loc_sncy_LongTermDebtGrossMaturityAfterYearFour_019dab7b-3f2d-7cac-8490-4d9669f28dfa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour_019dab7b-3f2d-7d23-8e45-89eaa88fb178" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_sncy_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_019dab7b-3f2d-72bb-9ece-283788271dd3" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationAfterYearFour_019dab7b-3f2d-7d23-8e45-89eaa88fb178" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019dab7b-3f2d-7793-98cf-1f29087e18cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearThree_019dab7b-3f2d-72d0-8b11-e4984c36cc55" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearThree"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019dab7b-3f2d-7793-98cf-1f29087e18cc" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearThree_019dab7b-3f2d-72d0-8b11-e4984c36cc55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearThree_019dab7b-3f2d-7da7-8fc3-3a5b9c47cdd2" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearThree"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019dab7b-3f2d-7793-98cf-1f29087e18cc" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearThree_019dab7b-3f2d-7da7-8fc3-3a5b9c47cdd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019dab7b-3f2d-7c3c-9e8d-305b13449b14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearFour_019dab7b-3f2d-75a8-96ed-976800f4b214" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019dab7b-3f2d-7c3c-9e8d-305b13449b14" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearFour_019dab7b-3f2d-75a8-96ed-976800f4b214" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_DebtIssuanceCostsFutureAmortizationYearFour_019dab7b-3f2d-74fa-834a-06622ec73540" xlink:href="sncy-20260331.xsd#sncy_DebtIssuanceCostsFutureAmortizationYearFour"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019dab7b-3f2d-7c3c-9e8d-305b13449b14" xlink:to="loc_sncy_DebtIssuanceCostsFutureAmortizationYearFour_019dab7b-3f2d-74fa-834a-06622ec73540" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear_019dab7b-3f2d-79f3-a67f-a7eab6ce0637" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityRemainderOfFiscalYear_019dab7b-3f2d-79f3-a67f-a7eab6ce0637" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearOne_019dab7b-3f2d-730c-ade9-13a0b3527127" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearOne"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearOne_019dab7b-3f2d-730c-ade9-13a0b3527127" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearTwo_019dab7b-3f2d-7a1f-84a7-1d268b00f295" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearTwo_019dab7b-3f2d-7a1f-84a7-1d268b00f295" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearThree_019dab7b-3f2d-7404-b3d4-e2c02e58bcbe" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearThree_019dab7b-3f2d-7404-b3d4-e2c02e58bcbe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityYearFour_019dab7b-3f2d-7e46-bab3-ed1de03c5ed9" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityYearFour_019dab7b-3f2d-7e46-bab3-ed1de03c5ed9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_sncy_LongTermDebtGrossMaturityAfterYearFour_019dab7b-3f2d-764f-853a-8522e8ed6a9c" xlink:href="sncy-20260331.xsd#sncy_LongTermDebtGrossMaturityAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-7de1-9a62-055bfd3127b4" xlink:to="loc_sncy_LongTermDebtGrossMaturityAfterYearFour_019dab7b-3f2d-764f-853a-8522e8ed6a9c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/DEBTFutureMaturitiesoftheOutstandingDebtDetails_1" xlink:type="simple" xlink:href="sncy-20260331.xsd#DEBTFutureMaturitiesoftheOutstandingDebtDetails_1"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/DEBTFutureMaturitiesoftheOutstandingDebtDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019dab7b-3f2d-72e5-bd99-09e48718cce3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-73e9-816b-26503ae55c8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-72e5-bd99-09e48718cce3" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019dab7b-3f2d-73e9-816b-26503ae55c8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-714f-9db6-676580cc66eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019dab7b-3f2d-72e5-bd99-09e48718cce3" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019dab7b-3f2d-714f-9db6-676580cc66eb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/INVESTMENTSSummaryofdebtsecuritiesbymajorsecuritytypeDetails" xlink:type="simple" xlink:href="sncy-20260331.xsd#INVESTMENTSSummaryofdebtsecuritiesbymajorsecuritytypeDetails"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/INVESTMENTSSummaryofdebtsecuritiesbymajorsecuritytypeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss_019dab7b-3f2d-769a-8da5-44c23605e870" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019dab7b-3f2d-7b5d-a49d-901a1a7456e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss_019dab7b-3f2d-769a-8da5-44c23605e870" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019dab7b-3f2d-7b5d-a49d-901a1a7456e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019dab7b-3f2d-7fef-810f-1a1cc54fdf9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss_019dab7b-3f2d-769a-8da5-44c23605e870" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019dab7b-3f2d-7fef-810f-1a1cc54fdf9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019dab7b-3f2d-7b5c-b5a6-a08de5656f11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss_019dab7b-3f2d-769a-8da5-44c23605e870" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019dab7b-3f2d-7b5c-b5a6-a08de5656f11" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.suncountry.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="simple" xlink:href="sncy-20260331.xsd#FAIRVALUEMEASUREMENTSDetails"/>
  <link:calculationLink xlink:role="http://www.suncountry.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019dab7b-3f2d-768e-93d5-10ff3e54ceb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019dab7b-3f2d-7c19-9d94-023f586bb36f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019dab7b-3f2d-768e-93d5-10ff3e54ceb3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019dab7b-3f2d-7c19-9d94-023f586bb36f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019dab7b-3f2d-7433-9f1f-c0b66c787cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019dab7b-3f2d-768e-93d5-10ff3e54ceb3" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019dab7b-3f2d-7433-9f1f-c0b66c787cd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecurities_019dab7b-3f2d-7dd2-95f2-1f0cd7304b76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecurities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019dab7b-3f2d-768e-93d5-10ff3e54ceb3" xlink:to="loc_us-gaap_DebtSecurities_019dab7b-3f2d-7dd2-95f2-1f0cd7304b76" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
