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

Return flights

30 Aug - 08 Sep	Iberia
26 Aug - 06 Sep	American Airlines
30 Aug - 20 Sep	Aer Lingus
31 Aug - 20 Sep	Aer Lingus
30 Aug - 05 Sep	Finnair
25 Aug - 20 Sep	Iberia
27 Aug - 20 Sep	Air Canada
26 Aug - 20 Sep	Iberia
25 Aug - 30 Aug	Air Canada
27 Aug - 05 Sep	Air Canada
25 Aug - 02 Sep	Air Canada
25 Aug - 29 Aug	Air Canada
26 Aug - 30 Aug	Air Canada
24 Aug - 31 Aug	Air Canada
27 Aug - 31 Aug	Air Canada
25 Aug - 31 Aug	Air Canada
24 Aug - 30 Aug	Air Canada	direct
26 Aug - 30 Aug	Lufthansa	direct
24 Aug - 31 Aug	Air Canada	direct
26 Aug - 31 Aug	Air Canada	direct

Also check the deals for one-way flights from Toronto 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 Toronto to Dublin in August from $522

Return flights