Cheapest return flights from Madrid to Keflavik in May from 153€

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

Return flights

16 May - 21 May Iberia Express direct
20 May - 31 May Iberia Express direct
22 May - 29 May Fly Play direct
02 May - 10 May Iberia Express direct
04 May - 11 May Fly Play direct
25 May - 01 Jun Fly Play direct
05 May - 10 May Iberia
06 May - 11 May Iberia Express

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

Skyscanner

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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