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

Return flights

06 Dec - 07 Dec	Wizz Air
01 Dec - 04 Dec	Wizz Air
12 Dec - 15 Dec	Wizz Air
12 Dec - 18 Dec	Wizz Air
10 Dec - 17 Dec	easyJet
01 Dec - 03 Dec	Wizz Air
11 Dec - 16 Dec	Wizz Air
11 Dec - 14 Dec	Fly Play	direct
03 Dec - 05 Dec	easyJet
23 Dec - 30 Dec	Lufthansa
30 Dec - 07 Jan	Scandinavian Airlines
31 Dec - 02 Jan	easyJet
22 Dec - 02 Jan	Wizz Air Malta
30 Dec - 02 Jan	Scandinavian Airlines
31 Dec - 02 Jan	Icelandair	direct
30 Dec - 07 Jan	Icelandair	direct
29 Dec - 01 Jan	Scandinavian Airlines
29 Dec - 01 Jan	Icelandair	direct
30 Dec - 02 Jan	Icelandair	direct
31 Dec - 03 Jan	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Copenhagen 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 Copenhagen in December from 154€

Return flights