Cheapest return flights from Madrid to Keflavik in September from $229

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

Return flights

22 Sep - 30 Sep Wizz Air UK
07 Sep - 15 Sep Wizz Air Malta
11 Sep - 15 Sep Wizz Air Malta
30 Sep - 07 Oct Wizz Air Malta
16 Sep - 30 Sep Wizz Air Malta
07 Sep - 13 Sep Wizz Air Malta
16 Sep - 01 Oct Wizz Air Malta
30 Sep - 06 Oct Wizz Air Malta
02 Sep - 15 Sep Iberia Express
07 Sep - 16 Sep Wizz Air Malta
05 Sep - 15 Sep Norwegian
14 Sep - 22 Sep Wizz Air Malta
11 Sep - 18 Sep Wizz Air Malta
26 Sep - 06 Oct Iberia Express
30 Sep - 13 Oct Wizz Air Malta
18 Sep - 10 Oct Transavia France
21 Sep - 03 Oct Transavia France

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

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