AirHint found the following cheapest return flights from Los Angeles (LAX) to Bangkok (BKK) in December 2025 (see full year).

Return flights

01 Dec - 10 Dec	China Southern
01 Dec - 09 Dec	China Southern
02 Dec - 11 Dec	Xiamen Airlines
01 Dec - 11 Dec	China Southern
04 Dec - 07 Dec	Xiamen Airlines
01 Dec - 16 Dec	China Southern
01 Dec - 22 Dec	Air China
04 Dec - 14 Dec	Xiamen Airlines
01 Dec - 08 Dec	Air China
01 Dec - 17 Dec	Air China
30 Dec - 15 Jan	China Airlines
02 Dec - 13 Jan	Sichuan Airlines
03 Dec - 16 Jan	Asiana Airlines
29 Dec - 28 Jan	China Airlines
31 Dec - 12 Jan	Asiana Airlines
28 Dec - 14 Jan	Asiana Airlines
08 Dec - 13 Jan	Asiana Airlines
28 Dec - 13 Jan	Asiana Airlines
07 Dec - 18 Jan	Asiana Airlines
09 Dec - 13 Jan	Zipair

Also check the deals for one-way flights from Los Angeles to Bangkok in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Los Angeles to Bangkok in December from $520

Return flights