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

Return flights

07 Dec - 13 Dec	Air France
06 Dec - 09 Dec	KLM
12 Dec - 15 Jan	Air France
01 Dec - 31 Jan	Air France
08 Dec - 13 Jan	Air France
09 Dec - 13 Jan	Air France
15 Dec - 14 Jan	Air France
03 Dec - 17 Dec	Turkish Airlines
24 Dec - 20 Jan	Air France
06 Dec - 17 Dec	Air France
05 Dec - 14 Dec	Air France
24 Dec - 14 Jan	KLM
24 Dec - 13 Jan	Air France
24 Dec - 12 Jan	Air France
08 Dec - 27 Dec	Air France
27 Dec - 13 Jan	Air France
10 Dec - 31 Dec	Air France
09 Dec - 31 Dec	Korean Air	direct
10 Dec - 31 Dec	Korean Air	direct
01 Dec - 31 Dec	Air China

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 $1199

Return flights