REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

6 Months Ended

Jun. 30, 2019

Revenue Recognition [Abstract]

Disaggregation of Revenue

Mileage Plan™ revenue included in the condensed consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Passenger revenue	$	172	$	167	$	325	$	306
Mileage Plan other revenue	118		108		228		215
Total Mileage Plan revenue	$	290	$	275	$	553	$	521

Cargo and other revenue included in the condensed consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Cargo revenue	$	38	$	34	$	68	$	60
Other revenue	21		17		41		32
Total Cargo and other revenue	$	59	$	51	$	109	$	92

Passenger revenue recognized in the condensed consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Passenger ticket revenue, including ticket breakage and net of taxes and fees	$	1,792	$	1,693	$	3,231	$	3,121
Passenger ancillary revenue	147		137		271		254
Mileage Plan passenger revenue	172		167		325		306
Total Passenger revenue	$	2,111	$	1,997	$	3,827	$	3,681

Contract with Customer Liabilities

The table below presents a roll forward of the total frequent flyer liability (in millions):

	Six Months Ended June 30,
	2019			2018
Total Deferred Revenue balance at January 1	$	1,874		$	1,725
Travel miles and companion certificate redemption - Passenger revenue	(325		)	(306		)
Miles redeemed on partner airlines - Other revenue	(51		)	(44		)
Increase in liability for mileage credits issued	451			402
Total Deferred Revenue balance at June 30	$	1,949		$	1,777