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

Return flights

21 Jan - 04 Feb	Korean Air
13 Jan - 20 Jan	Korean Air
13 Jan - 22 Jan	Korean Air
15 Jan - 29 Jan	Korean Air
22 Jan - 05 Feb	Korean Air
11 Jan - 21 Jan	China Airlines
13 Jan - 21 Jan	China Airlines
11 Jan - 15 Jan	China Airlines
12 Jan - 19 Jan	Korean Air

Also check the deals for one-way flights from San Jose 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 Jose to Bangkok in January from $796

Return flights