Cheapest return flights from Keflavik to Bangkok in December from 871€

Best time to book flights for Keflavik (KEF) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Keflavik (KEF) to Bangkok (BKK) in December 2025 (see full year).

Return flights

10 Dec - 29 Dec Finnair
07 Dec - 27 Dec easyJet
06 Dec - 27 Dec Scandinavian Airlines
25 Dec - 14 Jan Finnair
18 Dec - 30 Dec Fly Play
12 Dec - 03 Jan Finnair
13 Dec - 10 Jan Finnair
23 Dec - 10 Jan Fly Play
21 Dec - 02 Jan Wizz Air Malta
20 Dec - 03 Jan Fly Play
19 Dec - 03 Jan Finnair
20 Dec - 10 Jan Finnair

Also check the deals for one-way flights from Keflavik 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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