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

Return flights

04 May - 11 May	WestJet
06 May - 13 May	WestJet
13 May - 20 May	WestJet
18 May - 25 May	WestJet
19 May - 26 May	WestJet
20 May - 27 May	WestJet
12 May - 19 May	WestJet
25 May - 01 Jun	WestJet
27 May - 03 Jun	WestJet
26 May - 02 Jun	WestJet
03 May - 10 May	WestJet
07 May - 14 May	WestJet
10 May - 17 May	WestJet
28 May - 04 Jun	WestJet
31 May - 07 Jun	WestJet
31 May - 27 Jun	WestJet
29 May - 05 Jun	WestJet
30 May - 06 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 $554

Return flights