Cheapest return flights from Madrid to Keflavik in May from $175

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

Return flights

06 May - 10 May Wizz Air Malta
06 May - 17 May Wizz Air Malta
05 May - 10 May Wizz Air Malta
09 May - 19 May Wizz Air Malta
06 May - 20 May Wizz Air Malta
05 May - 09 May Wizz Air Malta
09 May - 17 May Ryanair
06 May - 07 May Wizz Air Malta
06 May - 12 May Wizz Air Malta
12 May - 20 May Wizz Air Malta
27 May - 05 Jun Wizz Air Malta
28 May - 07 Jun Scandinavian Airlines
27 May - 09 Jun Wizz Air Malta
04 May - 02 Jun Ryanair
27 May - 10 Jun Wizz Air Malta
28 May - 05 Jun Ryanair
29 May - 10 Jun Ryanair
29 May - 05 Jun Transavia France
28 May - 06 Jun Scandinavian Airlines
23 May - 04 Jun Scandinavian Airlines

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