AirHint found the following cheapest return flights from Keflavik (KEF) to Brussels (BRU) in January 2026 (see full year).

Return flights

21 Jan - 04 Feb	Wizz Air
23 Jan - 06 Feb	easyJet
31 Jan - 08 Feb	Wizz Air
23 Jan - 29 Jan	easyJet
21 Jan - 28 Jan	Wizz Air
23 Jan - 30 Jan	Wizz Air
28 Jan - 01 Feb	easyJet
30 Jan - 12 Feb	Lufthansa
23 Jan - 29 Jan	Icelandair	direct
18 Jan - 29 Jan	TUI
23 Jan - 06 Feb	Icelandair	direct
23 Jan - 30 Jan	Icelandair	direct
19 Jan - 25 Jan	easyJet
30 Jan - 12 Feb	Icelandair	direct
18 Jan - 29 Jan	Icelandair	direct
26 Jan - 26 Jan	Wizz Air
25 Jan - 25 Jan	Icelandair

Also check the deals for one-way flights from Keflavik to Brussels in January.

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 Keflavik to Brussels in January from $216

Return flights