AirHint found the following cheapest return flights from Montreal (YUL) to Dublin (DUB) in October 2025 (see full year).

Return flights

22 Oct - 29 Oct	Brussels Airlines
06 Oct - 13 Oct	FrenchBee
15 Oct - 22 Oct	FrenchBee
01 Oct - 08 Oct	FrenchBee
19 Oct - 26 Oct	FrenchBee
13 Oct - 20 Oct	FrenchBee
16 Oct - 23 Oct	WestJet
20 Oct - 27 Oct	British Airways
21 Oct - 30 Oct	British Airways
20 Oct - 30 Oct	British Airways
27 Oct - 03 Nov	British Airways
29 Oct - 05 Nov	British Airways
28 Oct - 04 Nov	British Airways
30 Oct - 06 Nov	British Airways
26 Oct - 02 Nov	FrenchBee
28 Oct - 02 Nov	Lufthansa
25 Oct - 01 Nov	Air Transat
31 Oct - 07 Nov	FrenchBee

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

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Montreal to Dublin in October from 328€

Return flights