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

Return flights

15 Aug - 15 Sep	WestJet
30 Aug - 19 Sep	WestJet
22 Aug - 21 Sep	WestJet
22 Aug - 15 Sep	WestJet
22 Aug - 16 Sep	WestJet
10 Aug - 21 Sep	WestJet
30 Aug - 01 Sep	WestJet
13 Aug - 27 Aug	WestJet
04 Aug - 11 Aug	WestJet
07 Aug - 21 Aug	WestJet
02 Aug - 05 Aug	WestJet
21 Aug - 26 Aug	Air France
21 Aug - 27 Aug	Air Canada
14 Aug - 19 Aug	Air Canada
21 Aug - 28 Aug	Air Canada
03 Aug - 04 Aug	Air Canada

Also check the deals for one-way flights from Calgary 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 Calgary to Istanbul in August from $737

Return flights