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

Return flights

23 Aug - 12 Sep	Volaris Costa Rica
17 Aug - 04 Sep	Qatar Airways
20 Aug - 25 Aug	Qatar Airways
05 Aug - 27 Aug	Qatar Airways
19 Aug - 24 Aug	Qatar Airways
16 Aug - 23 Aug	Qatar Airways
01 Aug - 12 Aug	SWISS

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 985€

Return flights