Cheapest return flights from Keflavik to Madrid in May from 158€

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

Return flights

10 May - 20 May Wizz Air Malta
19 May - 27 May Wizz Air
20 May - 27 May Wizz Air Malta
26 May - 31 May Wizz Air
27 May - 31 May Wizz Air Malta
17 May - 27 May Wizz Air
19 May - 05 Jun Wizz Air
26 May - 05 Jun Wizz Air
24 May - 05 Jun Wizz Air
20 May - 05 Jun Wizz Air Malta
31 May - 05 Jun Wizz Air Malta
29 May - 31 May Transavia France
27 May - 05 Jun Wizz Air Malta
31 May - 04 Jun Wizz Air Malta
07 May - 12 May Wizz Air
11 May - 20 May Wizz Air
25 May - 05 Jun Wizz Air
28 May - 05 Jun Wizz Air
23 May - 05 Jun Wizz Air
15 May - 22 May Wizz Air

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

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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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