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

Return flights

04 Dec - 11 Dec	Wizz Air
04 Dec - 08 Dec	Wizz Air
08 Dec - 10 Dec	easyJet
04 Dec - 05 Dec	Wizz Air
03 Dec - 10 Dec	Wizz Air
09 Dec - 16 Dec	easyJet
01 Dec - 03 Dec	Wizz Air
24 Dec - 31 Dec	SWISS
11 Dec - 15 Dec	easyJet
03 Dec - 10 Dec	Icelandair	direct
29 Dec - 05 Jan	Scandinavian Airlines
18 Dec - 04 Jan	easyJet
17 Dec - 04 Jan	easyJet
31 Dec - 02 Jan	easyJet
17 Dec - 04 Jan	Icelandair	direct
19 Dec - 04 Jan	easyJet
29 Dec - 01 Jan	Scandinavian Airlines
31 Dec - 03 Jan	Icelandair	direct
18 Dec - 04 Jan	Icelandair	direct
31 Dec - 02 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 176€

Return flights