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

Return flights

03 Mar - 05 Mar	Aer Lingus	direct
05 Mar - 09 Mar	Aer Lingus	direct
06 Mar - 08 Mar	Ryanair	direct
13 Mar - 15 Mar	Ryanair	direct
22 Mar - 24 Mar	Aer Lingus	direct
13 Mar - 16 Mar	Ryanair	direct
14 Mar - 16 Mar	Ryanair	direct
13 Mar - 14 Mar	Ryanair	direct
21 Mar - 04 Apr	Aer Lingus	direct
31 Mar - 17 Apr	Ryanair	direct
28 Mar - 11 Apr	Ryanair	direct
27 Mar - 05 Apr	Aer Lingus	direct
27 Mar - 03 Apr	Aer Lingus	direct
20 Mar - 29 Mar	Ryanair

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 $77

Return flights