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

Return flights

28 Jan - 04 Feb	TAP
23 Jan - 25 Jan	FrenchBee
18 Jan - 25 Jan	FrenchBee
21 Jan - 28 Jan	FrenchBee
23 Jan - 30 Jan	FrenchBee
14 Jan - 21 Jan	FrenchBee
19 Jan - 26 Jan	TAP
26 Jan - 02 Feb	Air Transat
25 Jan - 01 Feb	TAP
13 Jan - 20 Jan	WestJet
27 Jan - 03 Feb	Porter Airlines (Canada) Ltd
17 Jan - 24 Jan	Porter Airlines (Canada) Ltd
20 Jan - 27 Jan	British Airways
12 Jan - 19 Jan	British Airways
29 Jan - 05 Feb	British Airways
30 Jan - 06 Feb	FrenchBee
25 Jan - 16 Feb	Air Transat
31 Jan - 07 Feb	Air Transat

Also check the deals for one-way flights from Montreal to Dublin in January.

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 January from $523

Return flights