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

Return flights

01 Oct - 31 Oct	Flair Airlines
14 Oct - 21 Oct	China Airlines
12 Oct - 21 Oct	WestJet
01 Oct - 23 Oct	WestJet
22 Oct - 05 Nov	WestJet
20 Oct - 16 Nov	WestJet
20 Oct - 17 Nov	WestJet
13 Oct - 10 Nov	WestJet
22 Oct - 19 Nov	WestJet
22 Oct - 18 Nov	WestJet
21 Oct - 19 Nov	WestJet
20 Oct - 10 Nov	WestJet
14 Oct - 04 Nov	WestJet
21 Oct - 11 Nov	WestJet
01 Oct - 11 Oct	Air France
01 Oct - 18 Oct	Air France
01 Oct - 15 Oct	Air France
01 Oct - 12 Oct	Air France
01 Oct - 17 Oct	Air France
18 Oct - 23 Oct	China Airlines

Also check the deals for one-way flights from Toronto to Seoul in October.

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 October from $1003

Return flights