AirHint found the following cheapest return flights from Toronto (YYZ) to Dublin (DUB) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct	WestJet	direct
29 Sep - 22 Oct	WestJet	direct
28 Sep - 22 Oct	WestJet	direct
18 Sep - 11 Oct	WestJet	direct
29 Sep - 16 Oct	WestJet
28 Sep - 16 Oct	WestJet
29 Sep - 09 Oct	WestJet
07 Sep - 14 Sep	WestJet
27 Sep - 04 Oct	Icelandair
08 Sep - 16 Sep	WestJet	direct
01 Sep - 11 Sep	WestJet	direct
18 Sep - 02 Oct	WestJet
08 Sep - 15 Sep	Air Transat	direct
01 Sep - 17 Sep	WestJet	direct
28 Sep - 05 Oct	Air Transat	direct
01 Sep - 14 Sep	WestJet	direct
16 Sep - 22 Sep	WestJet	direct
09 Sep - 23 Sep	WestJet
21 Sep - 28 Sep	Icelandair
05 Sep - 12 Sep	WestJet

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

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 Toronto to Dublin in September from 293€

Return flights