AirHint found the following cheapest return flights from Ontario (ONT) to Dublin (DUB) in July 2026 (see full year).

Return flights

28 Jul - 04 Aug	Iberia
23 Jul - 12 Aug	British Airways
30 Jul - 04 Aug	Iberia
20 Jul - 05 Aug	Lufthansa
27 Jul - 03 Aug	Iberia
30 Jul - 03 Aug	British Airways
16 Jul - 23 Jul	Iberia
30 Jul - 07 Aug	British Airways
26 Jul - 02 Aug	Iberia
20 Jul - 27 Jul	Iberia
09 Jul - 16 Jul	Iberia
07 Jul - 14 Jul	Iberia
17 Jul - 24 Jul	Iberia
24 Jul - 31 Jul	Iberia
25 Jul - 01 Aug	Iberia
13 Jul - 20 Jul	Iberia
02 Jul - 09 Jul	Iberia
15 Jul - 22 Jul	Iberia
22 Jul - 29 Jul	Iberia
30 Jul - 06 Aug	Turkish Airlines

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 $792

Return flights