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

Return flights

08 Aug - 16 Aug	WestJet
01 Aug - 08 Aug	WestJet
04 Aug - 11 Aug	WestJet
07 Aug - 14 Aug	WestJet
08 Aug - 15 Aug	WestJet
09 Aug - 16 Aug	WestJet
11 Aug - 18 Aug	WestJet
13 Aug - 20 Aug	WestJet
14 Aug - 21 Aug	WestJet
15 Aug - 22 Aug	WestJet
21 Aug - 08 Sep	WestJet
25 Aug - 01 Sep	WestJet
26 Aug - 02 Sep	WestJet
27 Aug - 03 Sep	WestJet
28 Aug - 04 Sep	WestJet
29 Aug - 05 Sep	WestJet
30 Aug - 06 Sep	WestJet
31 Aug - 07 Sep	WestJet
31 Aug - 07 Sep	Air Canada	direct

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

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 August from $512

Return flights