REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

3 Months Ended

Mar. 31, 2019

Revenue Recognition [Abstract]

Disaggregation of Revenue

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

	Three Months Ended March 31,
	2019		2018
Passenger revenue	$	153	$	139
Mileage Plan other revenue	110		107
Total Mileage Plan revenue	$	263	$	246

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

	Three Months Ended March 31,
	2019		2018
Passenger ticket revenue, including ticket breakage and net of taxes and fees	$	1,439	$	1,428
Passenger ancillary revenue	124		117
Mileage Plan passenger revenue	153		139
Total Passenger revenue	$	1,716	$	1,684

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

	Three Months Ended March 31,
	2019		2018
Cargo revenue	$	30	$	26
Other revenue	20		15
Total Cargo and other revenue	$	50	$	41

Contract with Customer Liabilities

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

	Three Months Ended March 31,
	2019			2018
Total Deferred Revenue balance at January 1	$	1,874		$	1,725
Travel miles and companion certificate redemption - Passenger revenue	(153		)	(139		)
Miles redeemed on partner airlines - Other revenue	(28		)	(19		)
Increase in liability for mileage credits issued	222			184
Total Deferred Revenue balance at March 31	$	1,915		$	1,751