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

Return flights

07 May - 09 May	Ryanair	direct
07 May - 10 May	Ryanair	direct
23 May - 30 May	Aer Lingus	direct
22 May - 24 May	Aer Lingus	direct
01 May - 04 May	Scandinavian Airlines
01 May - 04 May	Aer Lingus	direct
02 May - 04 May	Aer Lingus	direct
18 May - 25 May	Ryanair

Also check the deals for one-way flights from Dublin to Brussels in May.

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 May from $109

Return flights