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

Return flights

02 Dec - 06 Dec	Wizz Air Malta
07 Dec - 12 Dec	Vueling Airlines
06 Dec - 13 Dec	Vueling Airlines
10 Dec - 15 Dec	easyJet
02 Dec - 09 Dec	Wizz Air Malta
03 Dec - 09 Dec	Wizz Air Malta
08 Dec - 15 Dec	easyJet
09 Dec - 15 Dec	easyJet
12 Dec - 15 Dec	Vueling Airlines
05 Dec - 08 Dec	easyJet
14 Dec - 11 Jan	easyJet
23 Dec - 25 Jan	easyJet
16 Dec - 25 Jan	easyJet
23 Dec - 26 Jan	easyJet
21 Dec - 11 Jan	easyJet
17 Dec - 12 Jan	easyJet
14 Dec - 12 Jan	easyJet
16 Dec - 18 Jan	easyJet
12 Dec - 11 Jan	easyJet
16 Dec - 11 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 147€

Return flights