AirHint found the following cheapest one-way flights from Toronto (YTZ) to Dublin (DUB) in October 2025 (see full year).

One-Way flights

04 Oct	Porter Airlines (Canada) Ltd
21 Oct	Porter Airlines (Canada) Ltd
02 Oct	Porter Airlines (Canada) Ltd
01 Oct	Porter Airlines (Canada) Ltd
03 Oct	Porter Airlines (Canada) Ltd
12 Oct	Porter Airlines (Canada) Ltd
07 Oct	Porter Airlines (Canada) Ltd
10 Oct	Porter Airlines (Canada) Ltd
17 Oct	Air Canada
14 Oct	Porter Airlines (Canada) Ltd

Also check the deals for return flights from Toronto to Dublin in October.

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 one-way flights from Toronto to Dublin in October from 261€

One-Way flights