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

Return flights

21 Oct - 06 Nov	easyJet
21 Oct - 03 Nov	easyJet
21 Oct - 29 Oct	easyJet
21 Oct - 28 Oct	easyJet
08 Oct - 20 Oct	Fly Play	direct
24 Oct - 30 Oct	Fly Play	direct
17 Oct - 20 Oct	Fly Play	direct
30 Oct - 06 Nov	Fly Play	direct
24 Oct - 09 Nov	Fly Play	direct
14 Oct - 19 Oct	easyJet
07 Oct - 17 Oct	easyJet
24 Oct - 02 Nov	Fly Play	direct
07 Oct - 15 Oct	easyJet
25 Oct - 27 Oct	easyJet
14 Oct - 22 Oct	easyJet
21 Oct - 02 Nov	easyJet
25 Oct - 02 Nov	easyJet
22 Oct - 03 Nov	Norwegian Air Sweden AOC
11 Oct - 01 Nov	Vueling Airlines
26 Oct - 02 Nov	Fly Play	direct

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

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 October from $157

Return flights