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

Return flights

07 Sep - 15 Oct	Wizz Air
07 Sep - 16 Oct	Wizz Air
17 Sep - 24 Sep	Fly Play
15 Sep - 17 Sep	Fly Play
18 Sep - 24 Sep	Wizz Air Malta
28 Sep - 05 Oct	Wizz Air Malta
08 Sep - 19 Sep	Fly Play
01 Sep - 09 Sep	Fly Play
14 Sep - 21 Sep	Wizz Air
15 Sep - 22 Sep	Fly Play
05 Sep - 21 Sep	Transavia France
07 Sep - 17 Oct	Wizz Air
03 Sep - 09 Sep	Fly Play
15 Sep - 18 Sep	Fly Play
30 Sep - 05 Oct	easyJet
29 Sep - 06 Oct	Scandinavian Airlines
28 Sep - 03 Oct	Wizz Air Malta
04 Sep - 03 Oct	Wizz Air Malta
26 Sep - 03 Oct	Fly Play
07 Sep - 15 Oct	Fly Play	direct

Also check the deals for one-way flights from Reykjavik to Madrid 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 Reykjavik to Madrid in September from 185€

Return flights