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

Return flights

06 May - 14 May	WestJet
19 May - 27 May	WestJet
04 May - 12 May	WestJet
05 May - 12 May	WestJet
09 May - 16 May	WestJet
05 May - 13 May	WestJet
06 May - 13 May	WestJet
05 May - 26 May	WestJet
02 May - 12 May	WestJet
06 May - 12 May	WestJet
23 May - 01 Jun	WestJet
24 May - 02 Jun	WestJet
17 May - 05 Jun	WestJet
29 May - 05 Jun	WestJet
26 May - 02 Jun	WestJet
24 May - 08 Jun	WestJet
11 May - 02 Jun	WestJet
30 May - 09 Jun	WestJet
27 May - 08 Jun	WestJet
28 May - 10 Jun	Air Transat

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Montreal to Dublin in May from 361€

Return flights