Cheapest return flights from Ontario to Seoul in September from $1060

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

16 Sep - 21 Sep China Airlines
08 Sep - 22 Sep China Airlines
02 Sep - 30 Sep China Airlines
01 Sep - 10 Sep China Airlines
03 Sep - 10 Sep China Airlines
08 Sep - 17 Sep China Airlines
01 Sep - 28 Sep China Airlines
15 Sep - 22 Sep China Airlines
30 Sep - 07 Oct China Airlines
30 Sep - 13 Oct China Airlines
13 Sep - 30 Sep China Airlines
07 Sep - 14 Sep China Airlines
24 Sep - 16 Oct China Airlines
13 Sep - 01 Oct China Airlines
24 Sep - 01 Oct China Airlines
14 Sep - 01 Oct China Airlines
24 Sep - 07 Oct China Airlines
15 Sep - 09 Oct China Airlines
28 Sep - 12 Oct China Airlines
30 Sep - 11 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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