Document and Entity Information [Abstract] Document Type Entity Registrant Name Amendment Flag Entity Central Index Key Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Long-Lived Tangible Asset [Axis] Property Plant And Equipment Type [Domain] Long-Lived Tangible Asset [Domain] Air Transportation Equipment [Member] Aircraft and Flight Equipment Leasehold Improvements [Member] Leasehold Improvements and Ground Equipment Computer Equipment [Member] Computer Hardware and Software Represents the information pertaining to finance lease assets. Finance Leased Assets [Member] Finance Lease Assets Represents the information pertaining to rotable parts related to the airline industry. Rotable Parts [Member] Rotable Parts Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value Cash and Equivalents Restricted Cash, Current Restricted Cash Short-term Investments Investments Accounts Receivable, after Allowance for Credit Loss, Current Accounts Receivable Accounts Receivable, net of an allowance for credit losses of $293 and $224, respectively Deposits Assets, Current Short-term Lessor Maintenance Deposits Inventory, Net Inventory, net of a reserve for obsolescence of $996 and $550, respectively Inventory, net of a reserve for obsolescence of $1,089 and $996, respectively Prepaid Expense, Current Prepaid Expenses Derivative Instruments and Hedges, Assets Derivative Assets Other Assets, Current Other Current Assets Assets, Current Total Current Assets Property, Plant and Equipment, Net [Abstract] Property & Equipment, net: Property, Plant and Equipment, Gross Property & Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation & Amortization Property, Plant and Equipment, Net Total Property & Equipment, net Other Assets [Abstract] Other Assets: Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Other Intangible Assets, net Total Other Intangible Assets Operating Lease, Right-of-Use Asset Operating Lease Right-of-use Assets Operating lease assets Amount of asset related to aircraft lease deposits. Aircraft Lease Deposits Aircraft Lease Deposits Deposits Assets, Noncurrent Long-term Lessor Maintenance Deposits Deferred Income Tax Assets, Net Deferred Tax Asset Other Assets, Noncurrent Other Assets Sum of the carrying amounts as of the balance sheet date of all other assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Other Assets, Noncurrent, Total Total Other Assets Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities: Accounts Payable, Current Accounts Payable Employee-related Liabilities, Current Accrued Salaries, Wages, and Benefits Accrual for Taxes Other than Income Taxes, Current Accrued Transportation Taxes The value of air transportation services sold but as yet unused by the passenger, including sales for air transportation to be provided by the reporting air carrier and air transportation to be provided by another air carrier for whom sales were made. Used to reflect the current portion of the liability (within one year or within the normal operating cycle if longer). Air Traffic Liabilities, Current Air Traffic Liabilities Derivative Instruments and Hedges, Liabilities Derivative Liabilities Sum of the carrying values as of the balance sheet date of the over-market liabilities to be amortized within one year or the operating cycle if longer. Overmarket Liabilities, Current Over-market Liabilities Finance Lease, Liability, Current Less: Short-term Obligations Finance Lease Obligations Finance lease liabilities, current Value of deferred revenue or cost to provide products or services, which is expected to be recognized in income or incurred within one year or the normal operating cycle, if longer, resulting from customer loyalty program. Loyalty Program Liabilities, Current Loyalty Program Liabilities Operating Lease, Liability, Current Less: Short-term Obligations Operating Lease Obligations Operating lease liabilities, current Long-term Debt, Current Maturities Less: Current Maturities of Long-term Debt Current Maturities of Long-term Debt Other Liabilities, Current Other Current Liabilities Liabilities, Current Total Current Liabilities Liabilities, Noncurrent [Abstract] Long-term Liabilities: Sum of the carrying values as of the balance sheet date of the over-market liabilities to be amortizeed after one year or the normal operating cycle, if longer. Overmarket Liabilities, Noncurrent Over-market Liabilities Finance Lease, Liability, Noncurrent Finance Lease Obligations Finance lease liabilities, long-term Value of deferred revenue or cost to provide products or services, which is expected to be recognized in income or incurred after one year or beyond the normal operating cycle, if longer, resulting from customer loyalty program. Loyalty Program Liabilities, Noncurrent Loyalty Program Liabilities Operating Lease, Liability, Noncurrent Operating Lease Obligations Operating lease liabilities, long-term Long-term Debt, Excluding Current Maturities Long-term Debt Total Long-term Debt Sum of the carrying values as of the balance sheet date of the income tax receivable agreement due after one year or the normal operating cycle, if longer. Income Taxes Receivable Agreement, Noncurrent Income Tax Receivable Agreement Other Liabilities, Noncurrent Other Long-term Liabilities Liabilities, Noncurrent Total Long-term Liabilities Liabilities Total Liabilities Commitments and Contingencies Commitments and Contingencies Commitments and Contingencies (Note 17) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' Equity: Stockholders' Equity Common Stock, Value, Issued Common Stock Common stock with $0.01 par value, 995,000,000 shares authorized, 57,153,467 and 46,839,659 issued at March 31, 2021 and December 31, 2020, respectively. Receivable from Shareholders or Affiliates for Issuance of Capital Stock Loans to Stockholders Loans to Stockholders Additional Paid in Capital Retained Earnings (Accumulated Deficit) Retained Earnings / (Deficit) Retained Earnings Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Accounts Receivable, Allowance for Credit Loss, Current Accounts Receivable, allowance for credit losses Inventory Valuation Reserves Inventory, reserve for obsolescence Common Stock, Par or Stated Value Per Share Common stock-par value (in dollars per share) Common Stock, Shares Authorized Common stock-shares authorized Common Stock, Shares, Issued Common stock-shares issued Class of Warrant or Right, Exercise Price of Warrants or Rights Exercise price Exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares Outstanding shares Income Statement [Abstract] Product and Service [Axis] Products And Services [Domain] Product and Service [Domain] Passenger [Member] Passenger Cargo And Freight [Member] Cargo Service Other [Member] Other Scenario [Axis] Scenario Unspecified [Domain] Scenario [Domain] Pro Forma [Member] Pro Forma Financial Designation, Predecessor and Successor [Fixed List] Revenues [Abstract] Operating Revenues: Revenue from Contract with Customer, Excluding Assessed Tax Operating Revenues Operating Expenses [Abstract] Operating Expenses: Fuel Costs Aircraft Fuel Labor and Related Expense Salaries, Wages, and Benefits Aircraft Rental Aircraft Rent Aircraft Maintenance, Materials, and Repairs Maintenance expense Maintenance Selling and Marketing Expense Sales and Marketing Depreciation, Depletion and Amortization Depreciation and Amortization The amount of expenses incurred on ground handling for aircraft during the reporting period. Ground Handling Expense Ground Handling Landing Fees and Other Rentals Landing Fees and Airport Rent Unusual or Infrequent Item, or Both, Net (Gain) Loss Special Items, net Total Special Items, net Other Operating Income (Expense), Net Other Operating, net Costs and Expenses Total Operating Expenses Operating Income (Loss) Operating Income Operating Income Operating Income / (Loss) Nonoperating Income (Expense) [Abstract] Non-operating Income (Expense): Investment Income, Interest Interest Income Interest Expense Interest Expense Other Nonoperating Income (Expense) Other, net Other Non-operating Income (Expense), net Nonoperating Income (Expense) Total Non-operating Expense, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before Income Tax Income Tax Expense (Benefit) Income Tax Expense Total Income Tax Expense / (Benefit) Income Tax Expense / (Benefit) Net Income (Loss) Attributable to Parent Net Income Net Income Net Income / (Loss) Earnings Per Share, Basic and Diluted [Abstract] Net Income per share to common stockholders: Net Income / (Loss) per share to common stockholders: Earnings Per Share, Basic Basic earnings per share Basic (in dollars per share) Earnings Per Share, Diluted Diluted earnings per share Diluted (in dollars per share) Basic Earnings Per Share, Pro Forma Pro Forma Net Income per share-Basic Diluted Earnings Per Share Pro Forma Pro Forma Net Income per share-Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator: Shares used for computation: Weighted Average Number of Shares Outstanding, Basic Weighted Average Common Shares Outstanding - Basic Weighted Average Number of Shares Outstanding, Diluted Weighted Average Common Shares Outstanding - Diluted Weighted Average Basic Shares Outstanding, Pro Forma Pro Forma shares used for computation-Basic Pro Forma Weighted Average Shares Outstanding, Diluted Pro Forma shares used for computation-Diluted CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Warrant [Member] Warrants Common Stock [Member] Common Stock Receivables From Stockholder [Member] Loans to Stockholders Additional Paid In Capital [Member] APIC Retained Earnings [Member] Retained Earnings Cumulative Effect, Period of Adoption [Axis] Cumulative Effect Period Of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect Period Of Adoption Adjustment [Member] Cumulative Effect of New ASU Stockholder's Equity Stockholders' Equity Attributable to Parent Balances, at End of period Balances, at Beginning of period Shares, Outstanding Balances, at End of period (in shares) Balances, at Beginning of period (in shares) Equity impact of shares surrendered by the stockholder in exchange of promissory notes. Shares Surrendered By Stockholders, Value, In Exchange Of Promissory Notes Shares Surrendered by Stockholders Number of shares surrendered by the stockholders in exchange of promissory notes issued by the company. Shares Surrendered By Stockholders, Shares, In Exchange Of Promissory Notes Shares Surrendered by Stockholders (in shares) Value of warrants issued on capital purchase. Capital Purchase, Warrants, Value Capital Purchase on Warrants Number of warrants issued on capital purchase. Capital Purchase, Warrants Capital Purchase on Warrants (in shares) Value of shares issued on capital purchase. Capital Purchase, Shares, Value Capital Purchase on Shares Number of shares issued on capital purchase. Capital Purchase, Shares Capital Purchase on Shares (in shares) The amount of additional capital contributed during the period. Additional Capital Contribution During Period Additional Capital Contribution Stock Issued During Period, Value, New Issues Initial Public Offering Stockholders Capital Contribution Stock Issued During Period, Shares, New Issues Initial Public Offering (in shares) Shares issued Value of warrants exercised. Warrants Exercised, Value Exercise of Apollo Warrants Number of warrants exercised. Warrants Exercised Exercise of Apollo Warrants (in shares) Dividends Distributions to Stockholder The amount of decrease in equity on establishment of income tax receivable agreement liability. Decrease In Equity Due To Income Tax Receivable Agreement Liability Income Tax Receivable Agreement Adjustments to Additional Paid in Capital, Warrant Issued Amazon Warrants APIC, Share-based Payment Arrangement, Increase for Cost Recognition Stock-based Compensation CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Adjustments to reconcile Net Income to Cash from Operating Activities: The amount of increase (decrease) in operating lease, right of use assets. Increase (Decrease) in Operating Lease, Right Of Use Assets Reduction in Operating Lease Right-of-use Assets Gain (Loss) on Disposition of Assets Non-Cash Loss on Asset Transactions, net Loss on Asset Transactions, net Unrealized Gain (Loss) on Derivatives Unrealized Loss (Gain) on Fuel Derivatives Amount of Amortization of maintenance reserve over market liabilities. Amortization Of Maintenance Reserve Over Market Liabilities Amortization of Over-market Liabilities Deferred Income Tax Expense (Benefit) Deferred Income Taxes Total Deferred Tax Expense / (Benefit) The amount of warrants vested during the period. Warrants Vested, Value Amazon Warrants Vested Share-based Payment Arrangement, Noncash Expense Stock-based Compensation Expense Amortization of Debt Issuance Costs Amortization of Debt Issuance Costs Increase (Decrease) in Operating Capital [Abstract] Changes in Operating Assets and Liabilities: Increase (Decrease) in Accounts Receivable Accounts Receivable The increase (decrease) in due from parent. Increase (Decrease) In Due From Parent Due From Predecessor Parent Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense Prepaid Expenses The increase (decrease) during the period in the amount of lessor maintenance deposits money paid in advance for goods or services that bring economic benefits for future periods. Increase (Decrease) in Lessor Maintenance Deposits Lessor Maintenance Deposits The increase (decrease) during the period in the amount of aircraft lease deposits money paid in advance for goods or services that bring economic benefits for future periods. Increase (Decrease) in Aircraft Lease Deposits Aircraft Lease Deposits Increase (Decrease) in Other Current Assets Other Assets Increase (Decrease) in Accounts Payable Accounts Payable Increase (Decrease) in Accrued Taxes Payable Accrued Transportation Taxes The increase (decrease) during the period in the amount of air traffic liabilities. Increase (Decrease) In Air Traffic Liabilities Air Traffic Liabilities The increase (decrease) during the period in the amount of loyalty program liabilities. Increase (Decrease) In Loyalty Program Liabilities Loyalty Program Liabilities The increase (decrease) during the period in the amount of operating lease liabilities. Increase (Decrease) In Operating Lease Liabilities Reduction in Operating Lease Obligations Increase (Decrease) in Other Current Liabilities Other Liabilities Net Cash Provided by (Used in) Operating Activities Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flows from Investing Activities: Payments to Acquire Property, Plant, and Equipment Purchases of Property & Equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from the sale of Property & Equipment Payments to Acquire Investments Purchase of Investments Proceeds from Sale, Maturity and Collection of Investments Proceeds from the Sale of Investments Net Cash Provided by (Used in) Investing Activities Net Cash Used in Investing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash Flows from Financing Activities: Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Cash Contributions from Stockholders Payments of Dividends Cash Distributions to Stockholder Proceeds from Issuance Initial Public Offering Cash Received from Stock Offering Payments of Stock Issuance Costs Costs of Stock Offering Proceeds from Warrant Exercises Proceeds Received from Exercise of Apollo Warrants Proceeds from Issuance of Long-term Debt Proceeds from Borrowings Proceeds from Issuance of Warrants Proceeds received for Amazon Warrants Finance Lease, Principal Payments Repayment of Finance Lease Obligations Financing Cash Flows for Finance Leases Repayments of Long-term Debt Repayment of Borrowings