Cheapest return flights from Madrid to Keflavik in December from $188

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

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

Return flights

08 Dec - 15 Dec Fly Play direct
08 Dec - 12 Dec Fly Play direct
12 Dec - 15 Dec Fly Play direct
07 Dec - 12 Dec Wizz Air Malta
01 Dec - 05 Dec Fly Play direct
05 Dec - 12 Dec Ryanair
06 Dec - 12 Dec Ryanair
10 Dec - 16 Dec Air Europa
12 Dec - 20 Dec SWISS
12 Dec - 17 Dec Ryanair
29 Dec - 12 Jan Fly Play direct
26 Dec - 09 Jan Fly Play direct
26 Dec - 05 Jan Fly Play direct
26 Dec - 02 Jan Iberia
27 Dec - 06 Jan Ryanair
26 Dec - 02 Jan Fly Play direct

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

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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