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

Return flights

25 Sep - 09 Oct	Wizz Air
28 Sep - 04 Oct	Wizz Air
21 Sep - 24 Sep	Lufthansa
17 Sep - 24 Sep	Wizz Air
26 Sep - 01 Oct	Fly Play
20 Sep - 27 Sep	Wizz Air
26 Sep - 10 Oct	Fly Play
21 Sep - 28 Sep	Wizz Air
17 Sep - 21 Sep	easyJet
17 Sep - 24 Sep	Fly Play	direct
19 Sep - 22 Sep	Fly Play
26 Sep - 01 Oct	Fly Play	direct
26 Sep - 10 Oct	Fly Play	direct
21 Sep - 28 Sep	Fly Play	direct
28 Sep - 04 Oct	Iberia Express	direct
17 Sep - 21 Sep	Fly Play	direct
21 Sep - 24 Sep	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 265€

Return flights