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

Return flights

26 Aug - 10 Sep	Flair Airlines
18 Aug - 18 Sep	TAP
17 Aug - 26 Sep	TAP
25 Aug - 29 Sep	WestJet
31 Aug - 10 Sep	Porter Airlines (Canada) Ltd
18 Aug - 20 Sep	TAP
11 Aug - 25 Sep	TAP
23 Aug - 25 Sep	WestJet
25 Aug - 25 Sep	TAP
31 Aug - 14 Sep	WestJet
12 Aug - 19 Aug	TAP
13 Aug - 27 Aug	TAP
20 Aug - 27 Aug	WestJet
25 Aug - 27 Aug	WestJet
17 Aug - 27 Aug	TAP
20 Aug - 25 Aug	WestJet
13 Aug - 18 Aug	TAP
21 Aug - 27 Aug	Aer Lingus
21 Aug - 25 Aug	TAP
15 Aug - 26 Aug	WestJet

Also check the deals for one-way flights from Toronto to Istanbul 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 Istanbul in August from 532€

Return flights