AirHint found the following cheapest one-way flights from Toronto (YTZ) to Seoul (ICN) in August 2025 (see full year).

One-Way flights

25 Aug	Air Canada
30 Aug	Porter Airlines (Canada) Ltd
27 Aug	Porter Airlines (Canada) Ltd
24 Aug	Porter Airlines (Canada) Ltd
20 Aug	Porter Airlines (Canada) Ltd
21 Aug	Porter Airlines (Canada) Ltd
28 Aug	Porter Airlines (Canada) Ltd
22 Aug	Porter Airlines (Canada) Ltd
29 Aug	Porter Airlines (Canada) Ltd
23 Aug	Porter Airlines (Canada) Ltd

Also check the deals for return flights from Toronto to Seoul in August.

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 one-way flights from Toronto to Seoul in August from 551€

One-Way flights