Cheapest return flights from Brussels to Keflavik in September from $250

Best time to book flights for Brussels (BRU) to Keflavik (KEF) flights at AirHint

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

Return flights

23 Sep - 24 Sep Norwegian
24 Sep - 25 Sep Ryanair
15 Sep - 21 Sep Ryanair
10 Sep - 20 Sep SWISS
05 Sep - 08 Sep British Airways
01 Sep - 07 Sep Ryanair
15 Sep - 21 Sep Icelandair direct
05 Sep - 08 Sep Icelandair direct
10 Sep - 20 Sep Icelandair direct
24 Sep - 25 Sep Icelandair direct

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

Skyscanner

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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