AirHint found the following cheapest return flights from Ontario (ONT) to Istanbul (IST) in June 2025 (see full year).

Return flights

20 Jun - 27 Jun	Iberia
21 Jun - 03 Jul	Iberia
21 Jun - 28 Jun	Iberia
20 Jun - 28 Jun	Iberia
24 Jun - 03 Jul	jetBlue
26 Jun - 13 Jul	Qatar Airways
21 Jun - 02 Jul	British Airways
27 Jun - 07 Jul	Qatar Airways
19 Jun - 27 Jun	Iberia
28 Jun - 12 Jul	Alaska Airlines
26 Jun - 10 Jul	Alaska Airlines
28 Jun - 04 Jul	Alaska Airlines
26 Jun - 04 Jul	Alaska Airlines
20 Jun - 17 Jul	Qatar Airways
20 Jun - 30 Jun	Etihad Airways
15 Jun - 24 Jun	British Airways
24 Jun - 26 Jun	Iberia
16 Jun - 21 Jun	Alaska Airlines
17 Jun - 25 Jun	Alaska Airlines
15 Jun - 25 Jun	Alaska Airlines

Also check the deals for one-way flights from Ontario to Istanbul in June.

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 Istanbul in June from $1373

Return flights