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

Return flights

04 Dec - 10 Dec	TAP
09 Dec - 16 Dec	TAP
07 Dec - 14 Dec	Icelandair
02 Dec - 31 Dec	Air Canada
09 Dec - 23 Dec	TAP
01 Dec - 31 Dec	Air Canada
03 Dec - 10 Dec	British Airways
02 Dec - 09 Dec	British Airways
04 Dec - 13 Jan	British Airways
05 Dec - 11 Dec	Icelandair
05 Dec - 12 Dec	Icelandair
10 Dec - 10 Jan	Air Canada
11 Dec - 11 Jan	Air Canada
17 Dec - 05 Jan	Icelandair
13 Dec - 05 Jan	Icelandair
27 Dec - 11 Jan	Air Canada
29 Dec - 06 Jan	Air Canada
30 Dec - 06 Jan	Air Canada
22 Dec - 11 Jan	Air Canada
20 Dec - 01 Jan	Air France

Also check the deals for one-way flights from Toronto 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 Toronto to Istanbul in December from $730

Return flights