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

Return flights

16 Aug - 27 Aug	WestJet
17 Aug - 28 Aug	WestJet
14 Aug - 27 Aug	WestJet
09 Aug - 16 Aug	WestJet
17 Aug - 27 Aug	WestJet
23 Aug - 29 Aug	WestJet
30 Aug - 10 Sep	WestJet
23 Aug - 03 Sep	WestJet
24 Aug - 05 Sep	WestJet
23 Aug - 02 Sep	WestJet
22 Aug - 02 Sep	WestJet
26 Aug - 10 Sep	WestJet
22 Aug - 03 Sep	WestJet
26 Aug - 01 Sep	WestJet
18 Aug - 25 Aug	WestJet
18 Aug - 28 Aug	WestJet
01 Aug - 08 Aug	WestJet
13 Aug - 20 Aug	WestJet
26 Aug - 02 Sep	WestJet
25 Aug - 01 Sep	WestJet

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 419€

Return flights