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

Return flights

01 Dec - 04 Dec	WestJet
01 Dec - 09 Dec	WestJet
01 Dec - 28 Dec	WestJet
01 Dec - 08 Dec	WestJet
06 Dec - 27 Dec	WestJet
07 Dec - 14 Dec	WestJet
01 Dec - 15 Jan	Flair Airlines
01 Dec - 15 Dec	WestJet
11 Dec - 28 Dec	Flair Airlines
06 Dec - 20 Dec	WestJet
11 Dec - 27 Dec	Flair Airlines
06 Dec - 08 Jan	Flair Airlines
08 Dec - 08 Jan	WestJet
01 Dec - 13 Jan	WestJet
10 Dec - 10 Jan	WestJet
30 Dec - 28 Jan	WestJet
12 Dec - 20 Jan	Flair Airlines
10 Dec - 08 Jan	WestJet
09 Dec - 09 Jan	Flair Airlines
16 Dec - 14 Jan	WestJet

Also check the deals for one-way 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 return flights from Toronto to Seoul in December from $857

Return flights