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

Return flights

21 Oct - 19 Nov	Korean Air
21 Oct - 06 Nov	Korean Air
23 Oct - 04 Nov	Korean Air
28 Oct - 11 Nov	Korean Air
23 Oct - 03 Nov	Korean Air
22 Oct - 29 Oct	Korean Air
27 Oct - 25 Nov	Korean Air
22 Oct - 04 Nov	Korean Air
23 Oct - 31 Oct	Korean Air
29 Oct - 14 Nov	Korean Air
17 Oct - 02 Nov	Korean Air
31 Oct - 22 Nov	Korean Air
04 Oct - 13 Oct	China Airlines
01 Oct - 16 Oct	Alaska Airlines
01 Oct - 10 Oct	China Airlines
01 Oct - 31 Oct	China Airlines
01 Oct - 06 Oct	China Airlines
17 Oct - 31 Oct	China Airlines
02 Oct - 20 Oct	China Airlines
02 Oct - 13 Oct	China Airlines

Also check the deals for one-way flights from San Jose to Bangkok in October.

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 October from $712

Return flights