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REVENUE RECOGNITION (Tables)
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
Passenger Revenue
Three Months Ended June 30,
Six Months Ended June 30,
(in millions)2025202420252024
Ticket$12,246 $12,349 $22,314 $22,182 
Loyalty travel awards1,092 975 2,033 1,820 
Travel-related services529 517 1,000 970 
Passenger revenue$13,867 $13,841 $25,347 $24,972 
Other Revenue
Three Months Ended June 30,
Six Months Ended June 30,
(in millions)2025202420252024
Refinery$1,141 $1,251 $2,203 $2,436 
Loyalty program855 836 1,662 1,631 
Ancillary businesses264 213 453 393 
Miscellaneous309 318 602 597 
Other revenue$2,569 $2,618 $4,920 $5,057 
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)20252024
Balance at January 1$8,826 $8,420 
Miles earned2,387 2,148 
Miles redeemed for air travel(2,033)(1,820)
Miles redeemed for non-air travel and other(109)(114)
Balance at June 30
$9,071 $8,634 
Schedule of Revenue by Geographic Region Our passenger and operating revenue by geographic region is summarized in the following tables:
Passenger revenue by geographic region
Three Months Ended June 30,
Six Months Ended June 30,
(in millions)2025202420252024
Domestic$9,318 $9,398 $17,418 $17,381 
Atlantic2,872 2,825 4,245 4,130 
Latin America954 964 2,288 2,229 
Pacific723 654 1,396 1,232 
Total$13,867 $13,841 $25,347 $24,972 

Operating revenue by geographic region
Three Months Ended June 30,
Six Months Ended June 30,
(in millions)2025202420252024
Domestic$11,417 $11,575 $21,472 $21,607 
Atlantic3,283 3,210 4,929 4,791 
Latin America1,093 1,102 2,615 2,543 
Pacific855 771 1,672 1,465 
Total$16,648 $16,658 $30,688 $30,406