Cheapest return flights from Brussels to Keflavik in September from $232

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

Return flights

02 Sep - 08 Sep Scandinavian Airlines
23 Sep - 30 Sep Scandinavian Airlines
08 Sep - 13 Sep Scandinavian Airlines
04 Sep - 11 Sep Scandinavian Airlines
28 Sep - 06 Oct Scandinavian Airlines
18 Sep - 29 Sep Ryanair
01 Sep - 26 Sep Scandinavian Airlines
20 Sep - 01 Oct Ryanair
05 Sep - 07 Sep Ryanair
26 Sep - 28 Sep Ryanair
10 Sep - 17 Sep Ryanair
16 Sep - 20 Sep Scandinavian Airlines
24 Sep - 01 Oct Ryanair
24 Sep - 01 Oct Icelandair direct
20 Sep - 01 Oct Icelandair direct

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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