United's sale features flights from Atlanta, Chicago, and New York to Beijing.
American's Hawaii sale includes flights to Oahu, Maui, the Big Island, and Kauai. The deal competes with a similar offer from United.
Flights to Maui, Oahu, Kauai, and the Big Island are included in United's Hawaii offer. Book tickets by November 20.
ATA's new $40 fiscount is available on holiday season flights through mid-January. Book tickets by Tuesday.
