Cheapest return flights from Madrid to Keflavik in May from 159€

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

Return flights

20 May - 26 May Wizz Air Malta
20 May - 01 Jun Wizz Air Malta
20 May - 24 May Wizz Air Malta
31 May - 08 Jun Ryanair
06 May - 20 May Ryanair
13 May - 20 May Wizz Air Malta
20 May - 31 May Wizz Air Malta
06 May - 12 May Ryanair
13 May - 24 May Wizz Air Malta
31 May - 07 Jun Ryanair
27 May - 31 May Wizz Air Malta
06 May - 10 May Wizz Air Malta
06 May - 13 May Ryanair
27 May - 07 Jun Wizz Air Malta
19 May - 01 Jun Ryanair
31 May - 11 Jun Ryanair
31 May - 14 Jun Ryanair
26 May - 07 Jun Wizz Air Malta
31 May - 04 Jun Ryanair
28 May - 07 Jun Ryanair

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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