AirHint found the following cheapest return flights from Bangkok (BKK) to Keflavik (KEF) in May 2026 (see full year).
Return flights
| 26 May - 01 Jun | Finnair | ||
| 26 May - 06 Jun | Finnair | ||
| 01 May - 11 May | Thai VietJet Air | ||
| 03 May - 15 May | KLM |
Also check the deals for one-way flights from Bangkok to Keflavik in May.
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