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

Return flights

30 Dec - 06 Jan	Wizz Air
05 Dec - 11 Dec	Lufthansa
05 Dec - 11 Dec	Icelandair	direct
05 Dec - 07 Dec	Wizz Air
26 Dec - 02 Jan	Lufthansa
10 Dec - 19 Dec	easyJet
05 Dec - 07 Dec	Icelandair	direct
26 Dec - 02 Jan	Icelandair	direct
12 Dec - 21 Dec	Wizz Air
26 Dec - 30 Dec	Wizz Air
21 Dec - 24 Dec	Icelandair	direct
26 Dec - 30 Dec	Icelandair	direct
30 Dec - 04 Jan	Scandinavian Airlines
30 Dec - 04 Jan	Icelandair	direct

Also check the deals for one-way flights from Reykjavik to Brussels 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 Brussels in December from $205

Return flights