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

Return flights

31 Dec - 02 Jan	easyJet
30 Dec - 06 Jan	easyJet
31 Dec - 03 Jan	easyJet
29 Dec - 31 Dec	Wizz Air
28 Dec - 04 Jan	Scandinavian Airlines
28 Dec - 30 Dec	Scandinavian Airlines
31 Dec - 03 Jan	Icelandair	direct
29 Dec - 30 Dec	Wizz Air
30 Dec - 06 Jan	Icelandair	direct
27 Dec - 28 Dec	Scandinavian Airlines
29 Dec - 31 Dec	Icelandair	direct
28 Dec - 30 Dec	Icelandair	direct
28 Dec - 04 Jan	Icelandair	direct
29 Dec - 30 Dec	Icelandair	direct
27 Dec - 28 Dec	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Berlin in December.

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 Keflavik to Berlin in December from 295€

Return flights