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

Return flights

23 Aug - 02 Sep	Fly Play	direct
30 Aug - 06 Sep	Fly Play	direct
23 Aug - 06 Sep	Fly Play	direct
23 Aug - 30 Aug	Fly Play	direct
26 Aug - 06 Sep	Fly Play	direct
26 Aug - 30 Aug	Fly Play	direct
26 Aug - 15 Sep	Ryanair
11 Aug - 23 Aug	Scandinavian Airlines
27 Aug - 10 Sep	Ryanair
22 Aug - 07 Sep	Wizz Air
23 Aug - 03 Sep	Ryanair
23 Aug - 27 Aug	Fly Play
16 Aug - 26 Aug	Fly Play	direct
16 Aug - 23 Aug	Fly Play	direct
14 Aug - 19 Aug	Fly Play	direct
30 Aug - 08 Sep	Ryanair
30 Aug - 03 Sep	Fly Play
21 Aug - 28 Aug	Ryanair
22 Aug - 26 Aug	Ryanair
25 Aug - 28 Aug	Ryanair

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

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 August from 188€

Return flights