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

Return flights

06 May - 13 May	TAP
24 May - 02 Jun	WestJet
07 May - 14 May	WestJet
04 May - 14 May	WestJet
16 May - 23 May	WestJet
10 May - 17 May	WestJet
17 May - 24 May	WestJet
23 May - 30 May	WestJet
11 May - 18 May	TAP
12 May - 19 May	WestJet
26 May - 02 Jun	Air Transat
30 May - 06 Jun	WestJet
05 May - 12 May	Porter Airlines (Canada) Ltd
25 May - 01 Jun	Air Canada	direct
27 May - 03 Jun	Air Canada
28 May - 04 Jun	Air Canada
24 May - 02 Jun	Air Canada	direct
16 May - 06 Jun	FrenchBee
31 May - 07 Jun	WestJet
31 May - 16 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 542€

Return flights