AirHint found the following cheapest return flights from San Jose (SJC) to Bangkok (BKK) in December 2025 (see full year).
Return flights
| 07 Dec - 16 Dec | Frontier Airlines | ||
| 06 Dec - 13 Dec | Korean Air | ||
| 29 Dec - 13 Jan | Korean Air | ||
| 19 Dec - 03 Jan | Alaska Airlines | ||
| 22 Dec - 04 Jan | Korean Air | ||
| 21 Dec - 03 Jan | Korean Air |
Also check the deals for one-way flights from San Jose to Bangkok in December.
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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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