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

Return flights

05 Dec - 09 Dec	WestJet
05 Dec - 12 Dec	WestJet
11 Dec - 06 Jan	Flair Airlines
26 Dec - 08 Jan	WestJet
01 Dec - 08 Dec	WestJet
14 Dec - 24 Dec	Flair Airlines
25 Dec - 15 Jan	WestJet
11 Dec - 24 Dec	LOT
01 Dec - 15 Dec	Turkish Airlines
30 Dec - 21 Jan	Cathay Pacific
01 Dec - 22 Dec	Air Canada
06 Dec - 14 Dec	Air Canada
31 Dec - 07 Jan	Air Canada
03 Dec - 30 Dec	Air Canada
01 Dec - 31 Jan	Turkish Airlines
14 Dec - 22 Dec	LOT
11 Dec - 11 Jan	Air France
02 Dec - 12 Jan	LOT
17 Dec - 18 Jan	LOT
27 Dec - 11 Jan	Air France

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 723€

Return flights