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

Return flights

31 Dec - 31 Jan	WestJet
30 Dec - 27 Jan	Flair Airlines
24 Dec - 29 Jan	WestJet
30 Dec - 21 Jan	Flair Airlines
26 Dec - 31 Jan	Flair Airlines
24 Dec - 22 Jan	WestJet
25 Dec - 25 Jan	Flair Airlines
27 Dec - 18 Jan	Flair Airlines
25 Dec - 18 Jan	Flair Airlines
26 Dec - 17 Jan	Flair Airlines
25 Dec - 27 Dec	Flair Airlines
25 Dec - 30 Dec	Flair Airlines
24 Dec - 27 Dec	Flair Airlines
24 Dec - 28 Dec	Flair Airlines
25 Dec - 30 Dec	Korean Air	direct
24 Dec - 30 Dec	WestJet
25 Dec - 31 Dec	Korean Air	direct
23 Dec - 28 Dec	Porter Airlines (Canada) Ltd
22 Dec - 30 Dec	Flair Airlines
25 Dec - 26 Dec	Korean Air

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 764€

Return flights