Cheapest return flights from Madrid to Keflavik in December from 139€

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

Return flights

12 Dec - 15 Dec Fly Play direct
01 Dec - 12 Dec Wizz Air Malta
08 Dec - 15 Dec Fly Play direct
01 Dec - 05 Dec Fly Play direct
01 Dec - 12 Dec Fly Play direct
08 Dec - 12 Dec Fly Play direct
15 Dec - 22 Dec Fly Play direct
15 Dec - 19 Dec Fly Play direct
12 Dec - 19 Dec Fly Play direct
03 Dec - 06 Dec Wizz Air Malta
31 Dec - 04 Jan Iberia Express
30 Dec - 06 Jan Iberia
23 Dec - 04 Jan Iberia Express
22 Dec - 02 Jan Fly Play direct
24 Dec - 01 Jan Transavia France
29 Dec - 05 Jan Fly Play direct
26 Dec - 05 Jan Fly Play direct
30 Dec - 05 Jan Iberia
26 Dec - 02 Jan Fly Play direct
29 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

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