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

Best time to book flights for Keflavik (KEF) to Madrid (MAD) flights at AirHint

AirHint found the following cheapest return flights from Keflavik (KEF) to Madrid (MAD) in May 2025 (see full year).

Return flights

08 May - 14 May Iberia Express direct
01 May - 07 May Iberia Express direct
29 May - 11 Jun Iberia Express
23 May - 30 May Fly Play direct
14 May - 21 May Fly Play
16 May - 23 May Fly Play direct
01 May - 05 May Iberia Express
15 May - 19 May Wizz Air Malta
29 May - 01 Jun Iberia Express
16 May - 19 May Fly Play
15 May - 18 May Wizz Air Malta
16 May - 19 May Fly Play direct
29 May - 11 Jun Iberia Express direct

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