Cheapest one-way flights from Keflavik to Madrid in September from 111€

AirHint found the following cheapest one-way flights from Keflavik (KEF) to Madrid (MAD) in September 2026 (see full year).

One-Way flights

20 Sep Wizz Air
15 Sep Wizz Air
21 Sep easyJet
02 Sep easyJet
01 Sep Wizz Air
03 Sep easyJet
08 Sep Wizz Air
28 Sep easyJet
23 Sep easyJet

Also check the deals for return flights from Keflavik to Madrid in September.

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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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