Cheapest return flights from Madrid to Keflavik in December from $189

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
01 Dec - 12 Dec Ryanair
05 Dec - 12 Dec Ryanair
01 Dec - 12 Dec Fly Play direct
10 Dec - 15 Dec Air Europa
08 Dec - 19 Dec Fly Play direct
03 Dec - 10 Dec Iberia Express
05 Dec - 17 Dec easyJet
05 Dec - 12 Dec Fly Play direct
03 Dec - 08 Dec Iberia Express
29 Dec - 09 Jan Fly Play direct
31 Dec - 05 Jan Iberia Express
22 Dec - 05 Jan Iberia Express
25 Dec - 01 Jan Iberia Express
22 Dec - 05 Jan Fly Play direct
25 Dec - 05 Jan Iberia Express
28 Dec - 08 Jan Iberia
26 Dec - 02 Jan Fly Play direct
30 Dec - 04 Jan Iberia

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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