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

Return flights

01 Oct - 05 Oct	Vueling Airlines
21 Oct - 28 Oct	easyJet
01 Oct - 06 Oct	Vueling Airlines
11 Oct - 21 Oct	Vueling Airlines
21 Oct - 26 Oct	easyJet
02 Oct - 05 Oct	Vueling Airlines
03 Oct - 05 Oct	Wizz Air Malta
02 Oct - 10 Oct	Vueling Airlines
07 Oct - 12 Oct	easyJet
01 Oct - 09 Oct	Wizz Air Malta
25 Oct - 01 Nov	easyJet
18 Oct - 01 Nov	easyJet
20 Oct - 02 Nov	Fly Play	direct
30 Oct - 02 Nov	Fly Play	direct
24 Oct - 02 Nov	Fly Play	direct
27 Oct - 09 Nov	easyJet
26 Oct - 02 Nov	Fly Play	direct
30 Oct - 03 Nov	Vueling Airlines
24 Oct - 01 Nov	Iberia
31 Oct - 10 Nov	Wizz Air Malta

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 144€

Return flights