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REVENUE RECOGNITION (Tables)
 12 Months Ended
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
Passenger revenue is composed of passenger ticket sales, loyalty travel awards and travel-related services performed in conjunction with a passenger’s flight.

Passenger revenue by category
Year Ended December 31,
(in millions)202420232022
Ticket$45,096 $43,596 $35,626 
Loyalty travel awards3,841 3,462 2,898 
Travel-related services1,957 1,851 1,694 
Total passenger revenue$50,894 $48,909 $40,218 
Other Revenue
Year Ended December 31,
(in millions)202420232022
Refinery$4,642 $3,379 $4,977 
Loyalty program3,297 3,093 2,597 
Ancillary businesses772 840 846 
Miscellaneous1,216 1,104 894 
Total other revenue$9,927 $8,416 $9,314 
Schedule of Activity in Loyalty Program Deferred Revenue
The table below presents the activity of the current and noncurrent loyalty program deferred revenue, and includes miles earned through travel and miles sold to participating companies, which are primarily through marketing agreements.

Loyalty program activity
(in millions)202420232022
Balance at January 1$8,420 $7,882 $7,559 
Miles earned4,463 4,173 3,419 
Travel miles redeemed(3,841)(3,462)(2,898)
Non-travel miles redeemed(216)(173)(198)
Balance at December 31$8,826 $8,420 $7,882 
Schedule of Revenue by Geographic Region Our passenger and operating revenue by geographic region are summarized in the following table:
Revenue by geographic region
Passenger RevenueOperating Revenue
Year Ended December 31,Year Ended December 31,
(in millions)202420232022202420232022
Domestic$35,226 $33,968 $30,197 $43,508 $40,845 $38,478 
Atlantic9,133 9,057 6,093 10,535 10,458 7,429 
Latin America3,995 3,798 2,889 4,564 4,292 3,334 
Pacific2,540 2,086 1,039 3,036 2,453 1,341 
Total$50,894 $48,909 $40,218 $61,643 $58,048 $50,582