Cheapest return flights from Barcelona to Keflavik in September from $157

Best time to book flights for Barcelona (BCN) to Keflavik (KEF) flights at AirHint

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

Return flights

24 Sep - 08 Oct easyJet
20 Sep - 01 Oct Vueling Airlines
17 Sep - 01 Oct easyJet
20 Sep - 04 Oct Vueling Airlines
24 Sep - 04 Oct easyJet
10 Sep - 14 Sep easyJet
20 Sep - 24 Sep Vueling Airlines
09 Sep - 20 Sep Vueling Airlines
20 Sep - 27 Sep Vueling Airlines
27 Sep - 07 Oct Vueling Airlines
27 Sep - 03 Oct easyJet
16 Sep - 25 Sep Vueling Airlines
16 Sep - 24 Sep easyJet
11 Sep - 14 Sep easyJet
16 Sep - 30 Sep Vueling Airlines
16 Sep - 27 Sep easyJet
13 Sep - 21 Sep Vueling Airlines
26 Sep - 06 Oct Fly Play direct
24 Sep - 08 Oct Fly Play direct
17 Sep - 01 Oct Fly Play direct

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

Skyscanner

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