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

Return flights

10 Dec - 17 Dec	easyJet
11 Dec - 14 Dec	Fly Play	direct
12 Dec - 17 Dec	Vueling Airlines
11 Dec - 18 Dec	Vueling Airlines
08 Dec - 12 Dec	easyJet
17 Dec - 07 Jan	easyJet
14 Dec - 18 Dec	Wizz Air Malta
02 Dec - 06 Dec	Vueling Airlines
07 Dec - 11 Dec	easyJet
11 Dec - 18 Dec	Fly Play	direct
09 Dec - 13 Dec	Wizz Air Malta
31 Dec - 07 Jan	Vueling Airlines
18 Dec - 08 Jan	easyJet
18 Dec - 08 Jan	Fly Play	direct
31 Dec - 04 Jan	Vueling Airlines
21 Dec - 06 Jan	Vueling Airlines
23 Dec - 01 Jan	easyJet
28 Dec - 08 Jan	Fly Play	direct
31 Dec - 03 Jan	Vueling Airlines
30 Dec - 04 Jan	Vueling Airlines

Also check the deals for one-way flights from Barcelona to Keflavik 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 Barcelona to Keflavik in December from 155€

Return flights