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

Return flights

16 Dec - 25 Jan	easyJet
30 Dec - 25 Jan	easyJet
31 Dec - 25 Jan	easyJet
17 Dec - 13 Jan	TUI
17 Dec - 20 Jan	TUI
17 Dec - 25 Jan	TUI
17 Dec - 17 Jan	TUI
17 Dec - 21 Jan	TUI
17 Dec - 12 Jan	TUI
17 Dec - 24 Jan	TUI
17 Dec - 31 Dec	TUI
17 Dec - 30 Dec	TUI
16 Dec - 30 Dec	Wizz Air
17 Dec - 22 Dec	TUI
15 Dec - 18 Dec	Wizz Air Malta
17 Dec - 23 Dec	TUI
14 Dec - 18 Dec	Wizz Air
17 Dec - 24 Dec	TUI
16 Dec - 22 Dec	easyJet
17 Dec - 29 Dec	TUI

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 $238

Return flights