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

Return flights

16 May - 18 May	Ryanair	direct
03 May - 06 May	Ryanair	direct
15 May - 18 May	Ryanair	direct
08 May - 10 May	Aer Lingus	direct
15 May - 17 May	Ryanair	direct
21 May - 24 May	Aer Lingus	direct
22 May - 24 May	Aer Lingus	direct
29 May - 01 Jun	Ryanair	direct

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 108€

Return flights