Cheapest return flights from Madrid to Keflavik in May from 167€

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

Return flights

11 May - 22 May Fly Play direct
11 May - 20 May Fly Play direct
01 May - 15 May Fly Play direct
01 May - 08 May Fly Play direct
04 May - 11 May Fly Play direct
29 May - 12 Jun Fly Play direct
11 May - 25 May Fly Play direct
20 May - 25 May Fly Play direct
15 May - 25 May Fly Play direct
08 May - 18 May Fly Play direct
15 May - 18 May Fly Play direct
29 May - 08 Jun Fly Play direct
30 May - 09 Jun Wizz Air UK
31 May - 10 Jun Iberia
29 May - 09 Jun Norwegian
22 May - 01 Jun Fly Play direct
22 May - 05 Jun Fly Play direct
26 May - 06 Jun Ryanair
25 May - 06 Jun Ryanair
28 May - 08 Jun Norwegian

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.