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

Return flights

17 Oct - 28 Oct	Flair Airlines
01 Oct - 11 Oct	KLM
01 Oct - 18 Oct	KLM
01 Oct - 22 Oct	KLM
27 Oct - 11 Nov	Air France
14 Oct - 21 Oct	WestJet
01 Oct - 23 Oct	KLM
01 Oct - 17 Oct	KLM
01 Oct - 14 Oct	KLM
22 Oct - 20 Nov	Air France
07 Oct - 28 Oct	Delta
07 Oct - 21 Oct	Delta
15 Oct - 19 Nov	Delta
22 Oct - 03 Nov	Delta
21 Oct - 25 Nov	KLM
24 Oct - 14 Nov	KLM
23 Oct - 12 Nov	Delta
24 Oct - 16 Nov	KLM
29 Oct - 13 Nov	KLM
26 Oct - 24 Nov	Delta

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 796€

Return flights