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

Return flights

11 Sep - 15 Sep	Wizz Air Malta
11 Sep - 22 Sep	Wizz Air Malta
12 Sep - 22 Sep	Vueling Airlines
16 Sep - 22 Sep	Wizz Air Malta
29 Sep - 07 Oct	easyJet
07 Sep - 15 Sep	easyJet
28 Sep - 06 Oct	easyJet
28 Sep - 08 Oct	easyJet
28 Sep - 07 Oct	easyJet
30 Sep - 07 Oct	easyJet
26 Sep - 06 Oct	Vueling Airlines
05 Sep - 15 Sep	easyJet
12 Sep - 16 Sep	Vueling Airlines
19 Sep - 23 Sep	Vueling Airlines
07 Sep - 19 Sep	easyJet
19 Sep - 28 Sep	Vueling Airlines
29 Sep - 09 Oct	Vueling Airlines
30 Sep - 07 Oct	Vueling Airlines	direct
25 Sep - 06 Oct	Vueling Airlines
30 Sep - 10 Oct	Vueling Airlines	direct

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

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 September from 180€

Return flights