Cheapest return flights from Madrid to Keflavik in December from 174€

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
15 Dec - 09 Jan Fly Play direct
12 Dec - 15 Dec Fly Play direct
01 Dec - 05 Dec Fly Play direct
04 Dec - 09 Dec Air Europa
05 Dec - 08 Dec Fly Play direct
06 Dec - 12 Dec Ryanair
03 Dec - 05 Dec Iberia Express
01 Dec - 06 Dec Iberia Express
04 Dec - 10 Dec Air Europa
26 Dec - 09 Jan Fly Play direct
19 Dec - 05 Jan Ryanair
19 Dec - 05 Jan Fly Play direct
26 Dec - 10 Jan Iberia Express
26 Dec - 11 Jan Iberia Express
29 Dec - 05 Jan Iberia Express
26 Dec - 02 Jan Iberia Express
30 Dec - 04 Jan Iberia Express
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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