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

Return flights

04 Dec - 09 Dec	easyJet
17 Dec - 08 Jan	easyJet
09 Dec - 12 Dec	easyJet
03 Dec - 11 Dec	easyJet
07 Dec - 11 Dec	easyJet
07 Dec - 13 Dec	easyJet
06 Dec - 09 Dec	easyJet
03 Dec - 10 Dec	easyJet
04 Dec - 11 Dec	easyJet
06 Dec - 12 Dec	easyJet
15 Dec - 18 Dec	easyJet
31 Dec - 08 Jan	easyJet
18 Dec - 05 Jan	easyJet
23 Dec - 01 Jan	easyJet
19 Dec - 05 Jan	Scandinavian Airlines
28 Dec - 01 Jan	easyJet
30 Dec - 07 Jan	easyJet
27 Dec - 01 Jan	Scandinavian Airlines
28 Dec - 05 Jan	easyJet
29 Dec - 01 Jan	easyJet

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 126€

Return flights