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

Return flights

21 Oct - 27 Oct	easyJet
21 Oct - 29 Oct	easyJet
21 Oct - 28 Oct	easyJet
25 Oct - 27 Oct	easyJet
25 Oct - 29 Oct	easyJet
21 Oct - 30 Oct	easyJet
12 Oct - 16 Oct	Vueling Airlines
18 Oct - 27 Oct	easyJet
25 Oct - 03 Nov	easyJet
07 Oct - 16 Oct	easyJet
21 Oct - 02 Nov	Vueling Airlines
18 Oct - 26 Oct	Vueling Airlines
18 Oct - 01 Nov	Vueling Airlines
18 Oct - 02 Nov	Vueling Airlines
25 Oct - 02 Nov	Vueling Airlines
25 Oct - 01 Nov	Vueling Airlines
31 Oct - 02 Nov	Wizz Air
30 Oct - 06 Nov	Fly Play	direct
31 Oct - 01 Nov	Wizz Air
27 Oct - 02 Nov	Vueling Airlines

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Barcelona to Keflavik in October from $134

Return flights