New change fee waiver policy	American	Delta	United
Regions covered	Any of the 50 U.S. states, Canada, Mexico, Caribbean, Puerto Rico, U.S. Virgin Islands	Domestic U.S., Puerto Rico and U.S. Virgin Islands	Continental U.S., Alaska, Hawaii, Puerto Rico, U.S. Virgin Islands
Get a voucher when changing to a cheaper flight?	Yes	Unclear at this time	No
Change fees waived on basic economy fares?	Only for flights booked through Dec. 31, 2020	Only for flights booked through Dec. 31, 2020	Only for flights booked through Dec. 31, 2020