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

Return flights

13 Dec - 14 Dec	Wizz Air
12 Dec - 14 Dec	easyJet
10 Dec - 17 Dec	Finnair
30 Dec - 02 Jan	Scandinavian Airlines
09 Dec - 17 Dec	Finnair
07 Dec - 30 Dec	Wizz Air
21 Dec - 25 Dec	Scandinavian Airlines
23 Dec - 26 Dec	Scandinavian Airlines
15 Dec - 18 Dec	Scandinavian Airlines
08 Dec - 11 Dec	Scandinavian Airlines
26 Dec - 29 Dec	Wizz Air
29 Dec - 01 Jan	Scandinavian Airlines
30 Dec - 02 Jan	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Stockholm 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 Stockholm in December from 266€

Return flights