Cheapest return flights from Keflavik to Madrid in September from 255€

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

Return flights

28 Sep - 01 Oct Wizz Air
20 Sep - 01 Oct Wizz Air
25 Sep - 29 Sep Wizz Air
24 Sep - 27 Sep easyJet
24 Sep - 28 Sep easyJet
29 Sep - 30 Sep Fly Play
27 Sep - 27 Sep Wizz Air
25 Sep - 28 Sep Wizz Air
26 Sep - 05 Oct Fly Play
21 Sep - 28 Sep Fly Play
22 Sep - 29 Sep easyJet
26 Sep - 29 Sep Fly Play
26 Sep - 28 Sep Fly Play
26 Sep - 05 Oct Fly Play direct
28 Sep - 01 Oct Iberia Express direct

Also check the deals for one-way flights from Keflavik to Madrid 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.

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