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

Return flights

19 Sep - 29 Sep	Icelandair
02 Sep - 12 Sep	Icelandair
27 Sep - 05 Oct	Icelandair
26 Sep - 05 Oct	Icelandair
27 Sep - 04 Oct	Icelandair
21 Sep - 26 Sep	Icelandair
17 Sep - 20 Sep	Icelandair
24 Sep - 27 Sep	Icelandair
10 Sep - 20 Sep	Icelandair
06 Sep - 13 Sep	Icelandair
21 Sep - 28 Sep	Icelandair
10 Sep - 17 Sep	Icelandair
27 Sep - 11 Oct	Icelandair
28 Sep - 04 Oct	Icelandair
22 Sep - 26 Sep	Icelandair
28 Sep - 05 Oct	Icelandair
26 Sep - 03 Oct	Icelandair
25 Sep - 02 Oct	Icelandair
16 Sep - 14 Oct	WestJet
27 Sep - 16 Oct	Icelandair

Also check the deals for one-way flights from Dublin to Toronto 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 Dublin to Toronto in September from 305€

Return flights