AirHint found the following cheapest return flights from San Francisco (SFO) to Bangkok (BKK) in January 2026 (see full year).

Return flights

24 Jan - 04 Feb	Singapore Airlines
15 Jan - 22 Jan	Singapore Airlines
19 Jan - 26 Jan	Singapore Airlines
16 Jan - 06 Feb	Singapore Airlines
11 Jan - 24 Jan	Singapore Airlines
20 Jan - 16 Feb	Singapore Airlines
06 Jan - 20 Jan	China Airlines
06 Jan - 13 Jan	China Airlines
11 Jan - 26 Jan	Delta
08 Jan - 09 Jan	IndiGo

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

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 San Francisco to Bangkok in January from 567€

Return flights