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

Return flights

29 Aug - 07 Sep	WestJet
20 Aug - 15 Sep	WestJet
24 Aug - 13 Sep	WestJet
24 Aug - 11 Sep	WestJet
19 Aug - 10 Sep	WestJet
23 Aug - 13 Sep	WestJet
19 Aug - 13 Sep	WestJet
31 Aug - 06 Sep	WestJet
19 Aug - 26 Aug	WestJet
23 Aug - 26 Aug	WestJet
20 Aug - 27 Aug	WestJet
22 Aug - 28 Aug	WestJet
22 Aug - 31 Aug	WestJet
17 Aug - 06 Sep	WestJet
22 Aug - 24 Aug	WestJet
23 Aug - 30 Aug	WestJet
16 Aug - 06 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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Calgary to Istanbul in August from 622€

Return flights