Cheapest return flights from Madrid to Keflavik in May from 101€

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

Return flights

05 May - 10 May Wizz Air Malta
13 May - 17 May Wizz Air Malta
06 May - 10 May Wizz Air Malta
20 May - 27 May Wizz Air Malta
06 May - 09 May Ryanair
26 May - 31 May Wizz Air Malta
09 May - 17 May Wizz Air Malta
05 May - 12 May Wizz Air Malta
13 May - 19 May Wizz Air Malta
02 May - 06 May Wizz Air Malta
31 May - 14 Jun Wizz Air Malta
27 May - 07 Jun Wizz Air Malta
26 May - 08 Jun Wizz Air Malta
27 May - 05 Jun Wizz Air Malta
26 May - 05 Jun Wizz Air Malta
26 May - 06 Jun Wizz Air Malta
30 May - 07 Jun Iberia Express
28 May - 04 Jun Norwegian
30 May - 09 Jun Iberia Express
26 May - 01 Jun Wizz Air Malta

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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