Cheapest one-way flights from Ontario to Seoul in September from $525

Best time to book flights for Ontario (ONT) to Seoul (ICN) flights at AirHint

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
08 Sep China Airlines
10 Sep China Airlines
18 Sep China Airlines
09 Sep China Airlines
11 Sep China Airlines
15 Sep China Airlines
29 Sep China Airlines
30 Sep China Airlines
14 Sep China Airlines

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

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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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