Cheapest return flights from Ontario to Seoul in September from 788€

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

Return flights

20 Sep - 27 Sep China Airlines
22 Sep - 29 Sep China Airlines
13 Sep - 28 Sep Frontier Airlines
06 Sep - 13 Sep China Airlines
01 Sep - 08 Sep China Airlines
30 Sep - 12 Oct China Airlines
15 Sep - 21 Oct China Airlines
16 Sep - 23 Oct China Airlines
29 Sep - 06 Oct China Airlines
02 Sep - 12 Sep China Airlines
18 Sep - 22 Sep China Airlines
03 Sep - 17 Sep China Airlines
15 Sep - 10 Oct China Airlines
27 Sep - 17 Oct China Airlines
28 Sep - 13 Oct China Airlines
27 Sep - 13 Oct China Airlines
03 Sep - 12 Oct China Airlines
17 Sep - 22 Sep China Airlines
04 Sep - 20 Sep China Airlines
17 Sep - 16 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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