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Comprehensive Loss Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Convertible Note Convertible Debt [Member] Deferred financing costs paid through issuance of debt Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction Available liquidity Available Liquidity Available Liquidity Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Secured Debt Secured Debt [Member] Net current-period other comprehensive income (loss), tax Other Comprehensive Income (Loss), Tax Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Issuance of shares of AAG common stock pursuant to a public stock offering (in shares) Stock Issued During Period, Shares, New Issues Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Money Market Funds Money Market Funds [Member] Summary of Net Receivables (Payables) to Related Parties Schedule of Related Party Transactions [Table Text Block] Other Product and Service, Other [Member] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Net increase in cash and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Total nonoperating expense, net Nonoperating other income (expense), net Nonoperating Income (Expense) Regional Expenses Regional Operating Expenses [Text Block] Regional Operating Expenses [Text Block] Regional Expenses [Table] Regional Expenses [Table] Regional Expenses [Table] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Travel credits related to unused tickets Contract With Customer, Liability, Travel Credits Contract With Customer, Liability, Travel Credits Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Operating expenses: Costs and Expenses [Abstract] Document Information [Line Items] Document Information [Line Items] Sale of Stock [Domain] Sale of Stock [Domain] Carrying Value Reported Value Measurement [Member] Interest Rate First Five Years Interest Rate First Five Years [Member] Interest Rate First Five Years [Member] Ownership percentage Equity Method Investment, Ownership Percentage Revenue Recognition Revenue from Contract with Customer [Text Block] Interest paid, net Interest Paid, Excluding Capitalized Interest, Operating Activities Ground property and equipment Ground Property and Equipment, Gross The gross amount of long-lived, depreciable ground property and equipment. Right-of-use (ROU) assets acquired through operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Long-term debt, fair value Long-term debt, including current maturities Long-term Debt, Fair Value Restricted cash and short-term investments Restricted Cash and Cash Equivalents and Short-Term Investments, Fair Value Disclosure Restricted Cash and Cash Equivalents and Short-Term Investments, Fair Value Disclosure Common stock held in Disputed Claims reserve (in shares) Common Stock, Capital Shares Reserved For Issuance In Disputed Claims Reserve Common Stock, Capital Shares Reserved For Issuance In Disputed Claims Reserve Income tax benefit Income Tax Expense (Benefit) Interest Rate Scenario [Domain] Interest Rate Scenario [Domain] [Domain] for Interest Rate Scenario [Axis] Cash and restricted cash at beginning of period Cash and restricted cash at end of period Total cash and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Diluted (in dollars per share) Diluted EPS (in dollars per share) Earnings Per Share, Diluted Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Local Phone Number Local Phone Number Secured Overnight Financing Rate or Other Secured Overnight Financing Rate Or Other [Member] Secured Overnight Financing Rate [Member] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Republic Airways Holdings, Inc. Republic Airways Holdings, Inc. [Member] Republic Airways Holdings, Inc. [Member] Schedule of Long-Term Debt Schedule of Debt [Table Text Block] Total long-term debt Long-term Debt, Gross Entity Address, Address Line One Entity Address, Address Line One Contract balances, liability Beginning balance Ending balance Contract with Customer, Liability Entity Emerging Growth Company Entity Emerging Growth Company Unusual or Infrequent Item, or Both [Table] Unusual or Infrequent Item, or Both [Table] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Accumulated amortization of intangibles Finite-Lived Intangible Assets, Accumulated Amortization Labor contract expenses Other Labor-related Expenses Maximum Maximum [Member] Settlement of single-dip unsecured claims held in Disputed Claims Reserve Adjustments To Additional Paid In Capital, Disputed Claims Settlement Adjustments To Additional Paid In Capital, Disputed Claims Settlement Purchases of short-term investments Payments to Acquire Short-term Investments Retained Earnings (Deficit) Retained Earnings [Member] Measurement Basis [Axis] Measurement Basis [Axis] Components of Net Periodic Benefit Cost (Income) Schedule of Net Benefit Costs [Table Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 2014 Revolving Facility Credit Facility 2014 [Member] Credit Facility 2014 [Member] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Payroll Support Program Promissory Note One, CARES Act Payroll Support Program Promissory Note One, CARES Act [Member] Payroll Support Program Promissory Note One, CARES Act Investments [Domain] Investments [Domain] Noncurrent liabilities Liabilities, Noncurrent [Abstract] Retiree Medical and Other Postretirement Benefits Other Postretirement Benefits Plan [Member] Corporate Obligations Corporate Debt Securities [Member] Trading Symbol Trading Symbol AAdvantage Term Loan Facility AAdvantage Term Loan Facility [Member] AAdvantage Term Loan Facility New revenue recognition term in response to Covid-19 Contract With Customer, Liability, Updated Revenue Recognition Period Contract With Customer, Liability, Updated Revenue Recognition Period Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Other comprehensive loss before reclassifications, before tax OCI, before Reclassifications, before Tax, Attributable to Parent Reduction of additional paid in capital, equity component of convertible debt, net of tax and offering costs Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Net Of Tax And Offering Costs Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Net Of Tax And Offering Costs Pension Benefits Pension Plan [Member] Loss Per Common Share Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] 2013 Revolving Facility Credit Facility 2013 [Member] Credit Facility 2013 [Member] Current liabilities Liabilities, Current [Abstract] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Entity Shell Company Entity Shell Company Number of putative class action lawsuits Number Of Putative Class Action Lawsuits Number of putative class action lawsuits. Recurring Fair Value, Recurring [Member] Borrowings from credit facilities Proceeds from Lines of Credit Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Prepayment term, number of days of the occurrence of triggering event Debt Instrument, Prepayment Trigger, Number Of Days Within The Occurrence Of Triggering Event Debt Instrument, Prepayment Trigger, Number Of Days Within The Occurrence Of Triggering Event Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basic and diluted EPS: Earnings Per Share, Basic [Abstract] Other revenue Other Revenue [Member] Other Revenue [Member]