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

Return flights

05 Jul - 31 Jul	Fly Play	direct
03 Jul - 26 Jul	Fly Play	direct
05 Jul - 29 Jul	Fly Play	direct
17 Jul - 22 Jul	Fly Play
05 Jul - 26 Jul	Fly Play	direct
03 Jul - 08 Jul	Fly Play
10 Jul - 14 Jul	SWISS
03 Jul - 08 Jul	Fly Play	direct
03 Jul - 07 Jul	Wizz Air Malta
17 Jul - 22 Jul	Fly Play	direct
25 Jul - 01 Aug	Scandinavian Airlines
27 Jul - 17 Aug	Vueling Airlines
27 Jul - 03 Aug	Vueling Airlines
13 Jul - 03 Aug	Vueling Airlines

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

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 July from $258

Return flights