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

Return flights

19 Aug - 03 Sep	Korean Air
05 Aug - 19 Aug	Korean Air
13 Aug - 25 Aug	Korean Air
12 Aug - 20 Aug	Korean Air
20 Aug - 27 Aug	Korean Air
13 Aug - 20 Aug	Korean Air
13 Aug - 27 Aug	Korean Air
12 Aug - 26 Aug	Korean Air
12 Aug - 27 Aug	Korean Air
13 Aug - 02 Sep	Korean Air
06 Aug - 03 Sep	Korean Air
19 Aug - 02 Sep	Korean Air
20 Aug - 03 Sep	Korean Air
26 Aug - 09 Sep	Korean Air
27 Aug - 10 Sep	Korean Air
12 Aug - 02 Sep	Korean Air
12 Aug - 03 Sep	Korean Air
07 Aug - 24 Aug	Korean Air
04 Aug - 25 Aug	Korean Air
21 Aug - 03 Sep	Korean Air

Also check the deals for one-way flights from San Jose 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 Jose to Bangkok in August from $712

Return flights