AirHint found the following cheapest return flights from Ontario (ONT) to Dublin (DUB) in July 2025 (see full year).

Return flights

28 Jul - 04 Aug	Air Canada
20 Jul - 28 Jul	Iberia
31 Jul - 04 Aug	Iberia
16 Jul - 30 Jul	jetBlue
16 Jul - 13 Aug	Iberia
09 Jul - 17 Jul	Iberia
21 Jul - 04 Aug	Iberia
16 Jul - 12 Aug	Iberia
11 Jul - 15 Jul	Iberia
16 Jul - 22 Jul	Iberia
18 Jul - 25 Jul	Iberia
21 Jul - 27 Jul	Iberia
25 Jul - 29 Jul	Iberia
07 Jul - 22 Jul	Iberia
24 Jul - 27 Jul	Iberia
25 Jul - 10 Aug	jetBlue
25 Jul - 03 Aug	jetBlue

Also check the deals for one-way flights from Ontario to Dublin in July.

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 Ontario to Dublin in July from $577

Return flights