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

Return flights

01 Dec - 05 Dec	Jet2
11 Dec - 15 Dec	LOT
03 Dec - 08 Dec	easyJet
28 Dec - 06 Jan	Icelandair	direct
28 Dec - 04 Jan	Icelandair	direct
10 Dec - 16 Dec	easyJet
10 Dec - 14 Dec	Wizz Air
07 Dec - 14 Dec	Wizz Air
12 Dec - 18 Dec	easyJet
30 Dec - 06 Jan	easyJet
28 Dec - 02 Jan	Icelandair	direct
29 Dec - 02 Jan	Icelandair	direct
30 Dec - 06 Jan	Icelandair	direct
12 Dec - 18 Dec	Icelandair	direct
13 Dec - 03 Jan	British Airways
18 Dec - 28 Dec	Scandinavian Airlines
01 Dec - 05 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 232€

Return flights