Cheapest return flights from San Francisco to Bangkok in December from $762

Best time to book flights for San Francisco (SFO) to Bangkok (BKK) flights at AirHint

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 Cathay Pacific
04 Dec - 18 Dec Korean Air
01 Dec - 15 Dec Korean Air
02 Dec - 30 Dec ANA
16 Dec - 13 Jan Singapore Airlines
17 Dec - 14 Jan Singapore Airlines
12 Dec - 31 Dec Singapore Airlines
13 Dec - 10 Jan Asiana Airlines
25 Dec - 05 Jan Singapore Airlines
18 Dec - 14 Jan Singapore Airlines
06 Dec - 03 Jan Asiana Airlines
19 Dec - 14 Jan Singapore Airlines
18 Dec - 31 Dec Air Canada
18 Dec - 06 Jan Singapore Airlines
21 Dec - 06 Jan Singapore Airlines
25 Dec - 02 Jan 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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