Cheapest return flights from Ontario to Seoul in September from $991

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

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

Return flights

10 Sep - 16 Sep China Airlines
09 Sep - 16 Sep China Airlines
16 Sep - 28 Sep China Airlines
10 Sep - 17 Sep China Airlines
10 Sep - 24 Sep China Airlines
01 Sep - 22 Sep China Airlines
25 Sep - 29 Sep China Airlines
01 Sep - 10 Sep China Airlines
17 Sep - 24 Sep China Airlines
16 Sep - 24 Sep China Airlines
30 Sep - 30 Oct China Airlines
29 Sep - 30 Oct China Airlines
24 Sep - 23 Oct China Airlines
24 Sep - 20 Oct China Airlines
23 Sep - 21 Oct China Airlines
30 Sep - 21 Oct China Airlines
14 Sep - 14 Oct China Airlines
02 Sep - 01 Oct China Airlines
25 Sep - 17 Oct China Airlines
04 Sep - 08 Oct China Airlines

Also check the deals for one-way 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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