Cheapest return flights from Barcelona to Keflavik in December from $146

Best time to book flights for Barcelona (BCN) to Keflavik (KEF) flights at AirHint

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

Return flights

06 Dec - 13 Dec easyJet
07 Dec - 14 Dec easyJet
01 Dec - 14 Dec easyJet
01 Dec - 10 Dec British Airways
01 Dec - 08 Dec British Airways
07 Dec - 11 Dec easyJet
01 Dec - 06 Dec British Airways
01 Dec - 07 Dec British Airways
23 Dec - 29 Dec Scandinavian Airlines
16 Dec - 18 Dec Wizz Air
21 Dec - 01 Jan Wizz Air
23 Dec - 01 Jan Scandinavian Airlines
30 Dec - 01 Jan Lufthansa
28 Dec - 01 Jan Lufthansa
30 Dec - 02 Jan Finnair

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

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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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