AirHint found the following cheapest return flights from Keflavik (KEF) to Bangkok (BKK) in January 2026 (see full year).
Return flights
| 27 Jan - 17 Feb | easyJet | ||
| 08 Jan - 07 Feb | Wizz Air | ||
| 30 Jan - 26 Feb | easyJet | ||
| 15 Jan - 28 Feb | British Airways | ||
| 04 Jan - 07 Jan | Scandinavian Airlines |
Also check the deals for one-way flights from Keflavik to Bangkok in January.
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