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
13 May - 20 May	TAP
04 May - 11 May	British Airways
05 May - 12 May	British Airways
01 May - 08 May	TAP
08 May - 15 May	TAP
15 May - 22 May	TAP
07 May - 14 May	Air Canada
09 May - 16 May	Air Canada
10 May - 17 May	Air Canada
31 May - 07 Jun	Air Canada
26 May - 02 Jun	Air Canada
30 May - 06 Jun	Air Canada
28 May - 04 Jun	Air Canada
27 May - 03 Jun	SWISS
25 May - 01 Jun	Lufthansa
29 May - 05 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 537€

Return flights