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

Return flights

05 Mar - 09 Mar	Aer Lingus	direct
13 Mar - 18 Mar	Ryanair	direct
08 Mar - 10 Mar	Aer Lingus	direct
05 Mar - 08 Mar	Aer Lingus	direct
12 Mar - 15 Mar	Ryanair	direct
19 Mar - 21 Mar	Aer Lingus	direct
20 Mar - 22 Mar	Aer Lingus	direct
29 Mar - 03 Apr	Ryanair	direct
27 Mar - 30 Mar	Aer Lingus	direct
26 Mar - 11 Apr	Ryanair	direct

Also check the deals for one-way flights from Dublin to Brussels 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 Dublin to Brussels in March from 70€

Return flights