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

One-Way flights

21 Oct	easyJet
14 Oct	easyJet
25 Oct	easyJet
31 Oct	Wizz Air Malta
10 Oct	Wizz Air Malta
08 Oct	Fly Play	direct
22 Oct	Norwegian Air Sweden AOC
13 Oct	Vueling Airlines
02 Oct	Vueling Airlines
28 Oct	Vueling Airlines

Also check the deals for return 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 one-way flights from Barcelona to Keflavik in October from $61

One-Way flights