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

Return flights

19 May - 27 May	Air Transat
17 May - 30 May	Air Transat
22 May - 29 May	Air Transat
03 May - 10 May	Air Transat
23 May - 30 May	Air Transat
19 May - 03 Jun	Air Transat
24 May - 11 Jun	Air Transat
26 May - 02 Jun	Air Transat
30 May - 06 Jun	Air Transat
31 May - 07 Jun	Air Transat
24 May - 02 Jun	Air Transat
31 May - 08 Jun	Air Transat
09 May - 22 May	Air Transat
09 May - 27 May	Air Transat
17 May - 24 May	Air Transat
12 May - 25 May	Air Transat
10 May - 23 May	Air Transat
29 May - 05 Jun	Air Transat
31 May - 13 Jun	Air Transat
16 May - 06 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.

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Cheapest return flights from Montreal to Dublin in May from 436€

Return flights