Cheapest return flights from Ontario to Seoul in September from $862

AirHint found the following cheapest return flights from Ontario (ONT) to Seoul (ICN) in September 2026 (see full year).

Return flights

06 Sep - 17 Sep China Airlines
20 Sep - 30 Sep China Airlines
01 Sep - 30 Sep China Airlines
12 Sep - 20 Sep China Airlines
12 Sep - 29 Sep China Airlines
04 Sep - 06 Sep China Airlines
02 Sep - 17 Sep China Airlines
01 Sep - 17 Sep China Airlines
16 Sep - 29 Sep China Airlines
15 Sep - 29 Sep China Airlines
19 Sep - 12 Oct China Airlines
23 Sep - 07 Oct China Airlines
20 Sep - 11 Oct China Airlines
19 Sep - 10 Oct China Airlines
30 Sep - 10 Oct China Airlines
29 Sep - 27 Oct China Airlines
26 Sep - 03 Oct Korean Air
28 Sep - 18 Oct Qatar Airways

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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