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

Return flights

14 Aug - 22 Aug	WestJet
17 Aug - 23 Aug	WestJet
17 Aug - 24 Aug	WestJet
19 Aug - 25 Aug	WestJet
16 Aug - 23 Aug	Air Canada
14 Aug - 21 Aug	WestJet
15 Aug - 22 Aug	WestJet
07 Aug - 22 Aug	WestJet
20 Aug - 30 Sep	WestJet
13 Aug - 20 Aug	WestJet
14 Aug - 20 Aug	WestJet
26 Aug - 02 Sep	Qatar Airways

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 $1008

Return flights