AirHint found the following cheapest return flights from Montreal (YUL) to Istanbul (IST) in August 2026 (see full year).

Return flights

28 Aug - 04 Sep	WestJet
26 Aug - 02 Sep	WestJet
30 Aug - 06 Sep	WestJet
30 Aug - 27 Sep	TAP
31 Aug - 07 Sep	FrenchBee
02 Aug - 02 Sep	TAP
25 Aug - 01 Sep	Air Transat
04 Aug - 11 Aug	British Airways
12 Aug - 19 Aug	British Airways
24 Aug - 31 Aug	Air Transat
03 Aug - 10 Aug	British Airways
05 Aug - 12 Aug	British Airways
17 Aug - 24 Aug	British Airways
02 Aug - 19 Aug	British Airways
07 Aug - 14 Aug	Air Transat
21 Aug - 28 Aug	Air Transat
06 Aug - 23 Aug	Air Transat
27 Aug - 03 Sep	Air Transat
29 Aug - 05 Sep	Air Transat
30 Aug - 27 Sep	Turkish Airlines	direct

Also check the deals for one-way flights from Montreal 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 Montreal to Istanbul in August from 692€

Return flights