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

Return flights

09 May - 20 May	Ryanair	direct
09 May - 27 May	Ryanair	direct
09 May - 15 May	Ryanair	direct
09 May - 22 May	Ryanair	direct
07 May - 20 May	Ryanair	direct
07 May - 27 May	Ryanair	direct
07 May - 15 May	Ryanair	direct
07 May - 22 May	Ryanair	direct
06 May - 07 May	Ryanair	direct
06 May - 20 May	Ryanair	direct
25 May - 02 Jun	KLM
30 May - 13 Jun	SWISS
29 May - 01 Jun	SWISS
21 May - 01 Jun	KLM
23 May - 01 Jun	SWISS
14 May - 02 Jun	Ryanair	direct
13 May - 02 Jun	Ryanair	direct
19 May - 02 Jun	Ryanair	direct
23 May - 02 Jun	Ryanair	direct
25 May - 02 Jun	Ryanair	direct

Also check the deals for one-way flights from Dublin to Barcelona 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 Barcelona in May from 144€

Return flights