AirHint found the following cheapest one-way flights from Toronto (YYZ) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

02 Dec	WestJet
03 Dec	Porter Airlines (Canada) Ltd
07 Dec	Porter Airlines (Canada) Ltd
05 Dec	Porter Airlines (Canada) Ltd
06 Dec	Flair Airlines
08 Dec	Porter Airlines (Canada) Ltd
25 Dec	WestJet
14 Dec	WestJet
04 Dec	KLM
11 Dec	KLM

Also check the deals for return flights from Toronto to Seoul 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 one-way flights from Toronto to Seoul in December from $552

One-Way flights