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

One-Way flights

02 Aug	Porter Airlines (Canada) Ltd
23 Aug	Porter Airlines (Canada) Ltd
28 Aug	Porter Airlines (Canada) Ltd
13 Aug	Porter Airlines (Canada) Ltd
06 Aug	Porter Airlines (Canada) Ltd
03 Aug	Porter Airlines (Canada) Ltd
07 Aug	Porter Airlines (Canada) Ltd
05 Aug	Porter Airlines (Canada) Ltd
19 Aug	Air Canada
24 Aug	Air Canada

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 427€

One-Way flights