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

One-Way flights

21 Dec	Scandinavian Airlines
16 Dec	easyJet
17 Dec	easyJet
20 Dec	Scandinavian Airlines
05 Dec	Scandinavian Airlines
11 Dec	Icelandair	direct
12 Dec	Icelandair	direct
13 Dec	Icelandair	direct
14 Dec	Icelandair	direct
15 Dec	Icelandair	direct

Also check the deals for return 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 one-way flights from Keflavik to Stockholm in December from 95€

One-Way flights