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

Return flights

27 Jun - 29 Jun	Air Transat
30 Jun - 16 Jul	Porter Airlines (Canada) Ltd
29 Jun - 14 Jul	Air Transat
27 Jun - 17 Jul	Air Transat
27 Jun - 14 Jul	Air Transat
24 Jun - 02 Jul	Porter Airlines (Canada) Ltd
30 Jun - 15 Jul	Air Transat
29 Jun - 22 Jul	Air Transat
28 Jun - 20 Jul	Air Transat
28 Jun - 12 Jul	Air Transat
27 Jun - 04 Jul	Air Transat
24 Jun - 27 Jun	Air Transat

Also check the deals for one-way flights from Toronto 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 Toronto to Istanbul in June from $1142

Return flights