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

Return flights

05 Dec - 12 Dec	Air France
15 Dec - 26 Jan	Air France
15 Dec - 15 Jan	Air France
01 Dec - 31 Dec	Air France
04 Dec - 20 Dec	Turkish Airlines
08 Dec - 19 Dec	Turkish Airlines
23 Dec - 30 Dec	Air France
14 Dec - 27 Dec	KLM
28 Dec - 08 Jan	Air France
26 Dec - 10 Jan	KLM
21 Dec - 28 Dec	Air France
25 Dec - 15 Jan	KLM
15 Dec - 05 Jan	Air France
24 Dec - 10 Jan	WestJet
24 Dec - 11 Jan	Air France
05 Dec - 12 Dec	Korean Air	direct
18 Dec - 25 Dec	Air France
16 Dec - 31 Dec	LOT
15 Dec - 15 Jan	Air Canada	direct
15 Dec - 26 Jan	Air Canada	direct

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 1030€

Return flights