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

Return flights

01 Dec - 09 Dec	KLM
02 Dec - 09 Dec	KLM
06 Dec - 09 Dec	British Airways
01 Dec - 08 Dec	British Airways
02 Dec - 07 Dec	British Airways
12 Dec - 10 Jan	British Airways
25 Dec - 08 Jan	British Airways
25 Dec - 10 Jan	British Airways
05 Dec - 10 Dec	British Airways
03 Dec - 10 Dec	British Airways
04 Dec - 10 Dec	British Airways
15 Dec - 15 Jan	Air France
04 Dec - 11 Dec	British Airways
11 Dec - 26 Dec	British Airways
29 Dec - 03 Jan	Icelandair
22 Dec - 08 Jan	KLM
15 Dec - 10 Jan	Icelandair
22 Dec - 12 Jan	KLM
24 Dec - 08 Jan	KLM
15 Dec - 11 Jan	Wizz Air UK

Also check the deals for one-way flights from Istanbul to Toronto 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 Istanbul to Toronto in December from $520

Return flights