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

Return flights

31 Aug - 24 Sep	WestJet
31 Aug - 30 Sep	WestJet
30 Aug - 30 Sep	WestJet
30 Aug - 29 Sep	WestJet
30 Aug - 14 Sep	WestJet
31 Aug - 09 Sep	WestJet
28 Aug - 09 Sep	Porter Airlines (Canada) Ltd
19 Aug - 10 Sep	Porter Airlines (Canada) Ltd
30 Aug - 20 Sep	WestJet
30 Aug - 12 Sep	WestJet
18 Aug - 25 Aug	TAP
20 Aug - 25 Aug	WestJet
20 Aug - 27 Aug	WestJet
19 Aug - 26 Aug	TAP
13 Aug - 26 Aug	TAP
25 Aug - 29 Aug	WestJet
14 Aug - 28 Aug	TAP
11 Aug - 19 Aug	TAP
12 Aug - 26 Aug	Flair Airlines
14 Aug - 19 Aug	TAP

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 $602

Return flights