AirHint found the following cheapest return flights from Brussels (BRU) to Keflavik (KEF) in March 2026 (see full year).

Return flights

17 Mar - 24 Mar	Ryanair
03 Mar - 05 Mar	Ryanair
17 Mar - 25 Mar	Ryanair
12 Mar - 19 Mar	Ryanair
24 Mar - 30 Mar	Ryanair
03 Mar - 11 Mar	Ryanair
18 Mar - 26 Mar	Ryanair
01 Mar - 05 Mar	Wizz Air
22 Mar - 26 Mar	Ryanair
13 Mar - 19 Mar	Wizz Air
29 Mar - 04 Apr	Ryanair
24 Mar - 09 Apr	Ryanair
25 Mar - 09 Apr	Ryanair
24 Mar - 02 Apr	Ryanair
26 Mar - 02 Apr	Ryanair
26 Mar - 05 Apr	Ryanair
27 Mar - 02 Apr	Wizz Air
26 Mar - 10 Apr	Ryanair
26 Mar - 10 Apr	Icelandair	direct
20 Mar - 05 Apr	Icelandair	direct

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

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 March from 146€

Return flights