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

Return flights

13 May - 21 May	WestJet
16 May - 23 May	WestJet
18 May - 25 May	WestJet
19 May - 26 May	WestJet
20 May - 27 May	WestJet
17 May - 24 May	WestJet
23 May - 01 Jun	WestJet
10 May - 23 May	WestJet
21 May - 13 Jun	WestJet
22 May - 02 Jun	WestJet
21 May - 09 Jun	WestJet
19 May - 22 May	WestJet
20 May - 23 May	WestJet
18 May - 22 May	WestJet
17 May - 05 Jun	WestJet
22 May - 09 Jun	WestJet
18 May - 09 Jun	WestJet
18 May - 07 Jun	WestJet
24 May - 02 Jun	WestJet
31 May - 12 Jun	WestJet

Also check the deals for one-way flights from Montreal to Dublin 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 Montreal to Dublin in May from 361€

Return flights