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

Return flights

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

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 $585

Return flights