Cheapest return flights from San Francisco to Bangkok in December from $626

AirHint found the following cheapest return flights from San Francisco (SFO) to Bangkok (BKK) in December 2025 (see full year).

Return flights

03 Dec - 24 Dec Singapore Airlines
03 Dec - 17 Dec Asiana Airlines
01 Dec - 24 Dec Asiana Airlines
29 Dec - 19 Jan Asiana Airlines
29 Dec - 16 Jan Asiana Airlines
29 Dec - 15 Jan Asiana Airlines
29 Dec - 28 Jan Asiana Airlines
01 Dec - 20 Dec China Eastern
31 Dec - 15 Jan Asiana Airlines
31 Dec - 14 Jan Asiana Airlines
04 Dec - 11 Dec Asiana Airlines
04 Dec - 25 Dec Asiana Airlines
29 Dec - 14 Jan Asiana Airlines
04 Dec - 29 Dec Asiana Airlines
03 Dec - 11 Jan Asiana Airlines
25 Dec - 14 Jan Asiana Airlines
29 Dec - 13 Jan Asiana Airlines
02 Dec - 11 Dec Korean Air
02 Dec - 23 Dec Korean Air
05 Dec - 14 Dec Asiana Airlines

Also check the deals for one-way flights from San Francisco to Bangkok in December.

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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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