AirHint found the following cheapest return flights from Brussels (BRU) to Keflavik (KEF) in June 2025 (see full year).

Return flights

24 Jun - 29 Jun	Lufthansa
24 Jun - 30 Jun	Lufthansa
23 Jun - 29 Jun	SWISS
24 Jun - 01 Jul	Lufthansa
19 Jun - 26 Jun	Lufthansa
21 Jun - 26 Jun	Lufthansa
26 Jun - 29 Jun	Lufthansa
20 Jun - 04 Jul	Lufthansa
17 Jun - 24 Jun	Fly Play	direct
26 Jun - 30 Jun	Lufthansa
18 Jun - 24 Jun	SWISS
21 Jun - 24 Jun	Lufthansa
23 Jun - 01 Jul	SWISS
28 Jun - 05 Jul	Fly Play	direct
24 Jun - 01 Jul	Fly Play	direct
25 Jun - 03 Jul	Ryanair
28 Jun - 02 Jul	Ryanair
30 Jun - 09 Jul	SWISS
29 Jun - 15 Jul	Ryanair
29 Jun - 06 Jul	SWISS

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

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 Brussels to Keflavik in June from $218

Return flights