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

Return flights

05 Dec - 08 Dec	easyJet
28 Dec - 09 Jan	easyJet
30 Dec - 07 Jan	easyJet
05 Dec - 08 Dec	Fly Play	direct
29 Dec - 07 Jan	easyJet
22 Dec - 07 Jan	Wizz Air Malta
29 Dec - 05 Jan	easyJet
20 Dec - 03 Jan	easyJet
20 Dec - 04 Jan	easyJet
19 Dec - 28 Dec	easyJet
19 Dec - 02 Jan	easyJet
22 Dec - 28 Dec	easyJet
24 Dec - 02 Jan	KLM
23 Dec - 30 Dec	easyJet
22 Dec - 26 Dec	Fly Play	direct
19 Dec - 26 Dec	easyJet
19 Dec - 26 Dec	Fly Play	direct
19 Dec - 02 Jan	Fly Play	direct

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

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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Cheapest return flights from Reykjavik to Madrid in December from 156€

Return flights