AirHint found the following cheapest return flights from Barcelona (BCN) to Keflavik (KEF) in March 2026 (see full year).

Return flights

07 Mar - 17 Mar	easyJet
14 Mar - 17 Mar	easyJet
09 Mar - 17 Mar	easyJet
07 Mar - 16 Mar	easyJet
10 Mar - 17 Mar	easyJet
02 Mar - 06 Mar	easyJet
09 Mar - 19 Mar	easyJet
10 Mar - 19 Mar	easyJet
02 Mar - 11 Mar	easyJet
02 Mar - 20 Mar	easyJet
26 Mar - 04 Apr	easyJet
24 Mar - 04 Apr	easyJet
25 Mar - 04 Apr	Vueling Airlines
25 Mar - 11 Apr	Vueling Airlines
21 Mar - 04 Apr	Vueling Airlines
26 Mar - 11 Apr	easyJet
24 Mar - 06 Apr	easyJet
20 Mar - 04 Apr	Vueling Airlines
27 Mar - 13 Apr	Vueling Airlines
02 Mar - 18 Apr	Ryanair

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

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 March from $139

Return flights