Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Passenger Revenue

The following table provides the components of Passenger revenue recognized for the three months ended March 31, 2022 and 2021:

	Three months ended March 31,
(in millions)	2022		2021
Passenger non-loyalty	$	3,364	$	1,354
Passenger loyalty - air transportation	624		278
Passenger ancillary sold separately	147		80
Total passenger revenues	$	4,135	$	1,712

Rollforward of Air Traffic Liability

As of March 31, 2022, and December 31, 2021, the components of Air traffic liability, including contract liabilities based on tickets sold and unused flight credits available to the Customer, both of which are net of recorded breakage, and loyalty points available for redemption, within the unaudited Condensed Consolidated Balance Sheet were as follows:

	Balance as of
(in millions)	March 31, 2022		December 31, 2021
Air traffic liability - passenger travel and ancillary passenger services	$	3,726	$	2,936
Air traffic liability - loyalty program	4,884		4,789
Total Air traffic liability	$	8,610	$	7,725

Rollforwards of the Company's Air traffic liability - loyalty program for the three months ended March 31, 2022 and 2021 were as follows (in millions):

	Three months ended March 31,
	2022		2021
Air traffic liability - loyalty program - beginning balance	$	4,789	$	4,447
Amounts deferred associated with points awarded	736		466
Revenue recognized from points redeemed - Passenger	(624)		(278)
Revenue recognized from points redeemed - Other	(17)		(12)
Air traffic liability - loyalty program - ending balance	$	4,884	$	4,623

Rollforwards of the amounts included in Air traffic liability as of March 31, 2022 and 2021 were as follows (in millions):

	Air traffic liability
Balance at December 31, 2021	$	7,725
Current period sales (passenger travel, ancillary services, flight loyalty, and partner loyalty)	5,038
Revenue from amounts included in contract liability opening balances	(1,881)
Revenue from current period sales	(2,272)
Balance at March 31, 2022	$	8,610

	Air traffic liability
Balance at December 31, 2020	$	7,133
Current period sales (passenger travel, ancillary services, flight loyalty, and partner loyalty)	2,324
Revenue from amounts included in contract liability opening balances	(743)
Revenue from current period sales	(982)
Balance at March 31, 2021	$	7,732