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

Return flights

30 Aug - 24 Sep	Air India
30 Aug - 25 Sep	Air India
31 Aug - 16 Sep	Singapore Airlines
08 Aug - 24 Aug	Air India
11 Aug - 01 Sep	Air India
25 Aug - 04 Sep	Air India
19 Aug - 03 Sep	Air India
23 Aug - 30 Aug	Air India
17 Aug - 31 Aug	Air India
09 Aug - 30 Aug	Air India
16 Aug - 23 Aug	Air India
22 Aug - 31 Aug	Air India
20 Aug - 03 Sep	Air India
20 Aug - 04 Sep	Air India
19 Aug - 04 Sep	Air India
08 Aug - 15 Aug	Air India
21 Aug - 31 Aug	Air India
14 Aug - 31 Aug	Air India
15 Aug - 31 Aug	Air India
31 Aug - 25 Sep	Singapore Airlines

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 $590

Return flights