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Revenue Recognition (Tables)
 3 Months Ended
Mar. 31, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue Recognized By Revenue The following table provides revenue recognized by revenue source for the three months ended March 31, 2025 and 2024 (in millions):
Three Months Ended March 31,
20252024
Passenger revenue
Passenger travel$1,792 $1,888 
Loyalty revenue - air transportation177 167 
Other revenue
Loyalty revenue122 107 
Other revenue49 47 
Total operating revenue$2,140 $2,209 
Schedule of Contract with Customer, Contract Asset, Contract Liability, and Receivable
Our contract liabilities primarily consist of ticket sales for which transportation has not yet been provided, unused credits available to customers, and outstanding loyalty points available for redemption (in millions):
March 31, 2025December 31, 2024
Air traffic liability - passenger travel$1,269 $1,073 
Air traffic liability - loyalty program (air transportation)1,126 1,125 
Deferred revenue - passenger travel and loyalty program travel (1)
375 389 
Deferred revenue - other (2)
32 27 
Total$2,802 $2,614 
    
(1) Included within other accrued liabilities and other liabilities on our consolidated balance sheets.
(2) Included within air traffic liability on our consolidated balance sheets.
The table below presents the activity of the current and non-current air traffic liability for our loyalty program, and includes points earned and sold to participating companies for the three months ended March 31, 2025 and 2024 (in millions):
Balance at December 31, 2024$1,125 
TrueBlue® points redeemed passenger
(177)
TrueBlue® points redeemed other
(8)
TrueBlue® points earned and sold
186 
Balance at March 31, 2025$1,126 
Balance at December 31, 2023$1,072 
TrueBlue® points redeemed passenger
(160)
TrueBlue® points redeemed other
(7)
TrueBlue® points earned and sold
171 
Balance at March 31, 2024$1,076