AirHint found the following cheapest return flights from Montreal (YUL) to Istanbul (IST) in December 2025 (see full year).

Return flights

03 Dec - 09 Dec	TAP
03 Dec - 11 Dec	TAP
03 Dec - 10 Dec	TAP
07 Dec - 14 Dec	FrenchBee
07 Dec - 17 Dec	FrenchBee
03 Dec - 07 Dec	FrenchBee
05 Dec - 11 Dec	TAP
05 Dec - 12 Dec	FrenchBee
01 Dec - 09 Dec	WestJet
02 Dec - 09 Dec	WestJet
07 Dec - 23 Jan	FrenchBee
31 Dec - 16 Jan	FrenchBee
10 Dec - 16 Jan	Air Transat
28 Dec - 30 Jan	Air France
28 Dec - 21 Jan	Air France
28 Dec - 20 Jan	KLM
29 Dec - 24 Jan	Porter Airlines (Canada) Ltd
08 Dec - 11 Jan	Porter Airlines (Canada) Ltd
27 Dec - 21 Jan	Air Transat
31 Dec - 12 Jan	FrenchBee

Also check the deals for one-way flights from Montreal to Istanbul in December.

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 December from $655

Return flights