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

Return flights

11 May - 29 May	Air Canada
07 May - 14 May	Air Canada
11 May - 18 May	Air Canada
13 May - 20 May	Air Canada
19 May - 26 May	Air Canada
08 May - 15 May	Lufthansa
12 May - 19 May	Air Canada
14 May - 21 May	Air Canada
18 May - 25 May	Air Canada
20 May - 27 May	Air Canada
27 May - 03 Jun	Air Canada
29 May - 05 Jun	Air Canada
31 May - 07 Jun	Air Canada
26 May - 02 Jun	Air Canada
25 May - 01 Jun	Lufthansa
30 May - 06 Jun	Air Canada
28 May - 04 Jun	Lufthansa

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 498€

Return flights