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

Return flights

30 Aug - 07 Sep	Air India
29 Aug - 08 Sep	Air India
30 Aug - 16 Sep	Air India
26 Aug - 17 Sep	Air India
30 Aug - 25 Sep	Air India
08 Aug - 08 Sep	Air India
26 Aug - 10 Sep	Air India
26 Aug - 09 Sep	Air India
10 Aug - 11 Sep	Air India
14 Aug - 25 Aug	Asiana Airlines
11 Aug - 25 Aug	Asiana Airlines
13 Aug - 25 Aug	Asiana Airlines
13 Aug - 27 Aug	Asiana Airlines
04 Aug - 26 Aug	Asiana Airlines
26 Aug - 02 Sep	Asiana Airlines
11 Aug - 27 Aug	Asiana Airlines
14 Aug - 21 Aug	Korean Air
11 Aug - 18 Aug	Korean Air
06 Aug - 22 Aug	Air India
12 Aug - 21 Aug	Korean Air

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

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 August from 539€

Return flights