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

Return flights

09 May - 16 May	Wizz Air UK
02 May - 10 May	Wizz Air UK
08 May - 16 May	Vueling Airlines
15 May - 27 May	Vueling Airlines
16 May - 28 May	Vueling Airlines
13 May - 27 May	Vueling Airlines
09 May - 17 May	Wizz Air UK
13 May - 20 May	Vueling Airlines
10 May - 17 May	Vueling Airlines
01 May - 03 May	easyJet
22 May - 03 Jun	Vueling Airlines
29 May - 06 Jun	Wizz Air Malta
23 May - 01 Jun	Vueling Airlines
29 May - 07 Jun	Transavia France
29 May - 07 Jun	Icelandair	direct
22 May - 03 Jun	Icelandair	direct

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

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 May from 172€

Return flights