Cheapest return flights from Montreal to Dublin in September from $533

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

Return flights

14 Sep - 21 Sep WestJet
24 Sep - 01 Oct British Airways
30 Sep - 11 Oct TAP
23 Sep - 30 Sep Air Canada
01 Sep - 08 Sep Air Transat
02 Sep - 09 Sep Air Transat
07 Sep - 14 Sep Air Transat
08 Sep - 15 Sep Air Transat
09 Sep - 16 Sep Air Transat
15 Sep - 22 Sep Air Transat
16 Sep - 23 Sep Air Transat
21 Sep - 28 Sep Air Transat
18 Sep - 10 Oct British Airways

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

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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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