Cheapest return flights from Brussels to Keflavik in September from $215

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

Return flights

11 Sep - 15 Sep Scandinavian Airlines
04 Sep - 06 Sep Scandinavian Airlines
09 Sep - 16 Sep Scandinavian Airlines
11 Sep - 13 Sep Scandinavian Airlines
17 Sep - 22 Sep Ryanair
04 Sep - 08 Sep Scandinavian Airlines
08 Sep - 17 Sep Scandinavian Airlines
02 Sep - 13 Sep Scandinavian Airlines
06 Sep - 11 Sep Ryanair
10 Sep - 15 Sep Ryanair
27 Sep - 06 Oct Ryanair

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

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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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