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

Return flights

19 Dec - 12 Jan	Wizz Air Malta
26 Dec - 03 Jan	Wizz Air
24 Dec - 04 Jan	Wizz Air
26 Dec - 29 Dec	Wizz Air
19 Dec - 23 Dec	Wizz Air Malta
26 Dec - 03 Jan	Icelandair	direct
21 Dec - 28 Dec	TUI
26 Dec - 26 Dec	Icelandair
25 Dec - 25 Dec	Wizz Air
23 Dec - 28 Dec	easyJet
24 Dec - 04 Jan	Icelandair	direct
20 Dec - 27 Dec	Wizz Air
26 Dec - 29 Dec	Icelandair	direct
19 Dec - 12 Jan	Icelandair	direct
20 Dec - 27 Dec	Icelandair	direct
19 Dec - 23 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 $347

Return flights