Cheapest one-way flights from Ontario to Seoul in September from $524

AirHint found the following cheapest one-way flights from Ontario (ONT) to Seoul (ICN) in September 2025 (see full year).

One-Way flights

22 Sep China Airlines
04 Sep Hawaiian Airlines
11 Sep China Airlines
15 Sep China Airlines
29 Sep China Airlines
08 Sep China Airlines
17 Sep China Airlines
16 Sep China Airlines
18 Sep China Airlines
25 Sep China Airlines

Also check the deals for return flights from Ontario to Seoul in September.

Skyscanner

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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