Cheapest return flights from Ontario to Seoul in October from $902

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

Return flights

20 Oct - 27 Oct China Airlines
02 Oct - 13 Oct China Airlines
01 Oct - 08 Oct China Airlines
02 Oct - 16 Oct China Airlines
03 Oct - 15 Oct China Airlines
02 Oct - 18 Oct China Airlines
01 Oct - 15 Oct China Airlines
20 Oct - 17 Nov China Airlines
17 Oct - 17 Nov China Airlines
27 Oct - 17 Nov China Airlines
28 Oct - 17 Nov China Airlines
31 Oct - 10 Nov China Airlines
15 Oct - 10 Nov China Airlines
05 Oct - 08 Oct China Airlines
19 Oct - 30 Oct China Airlines
02 Oct - 10 Oct China Airlines
20 Oct - 19 Nov China Airlines
15 Oct - 19 Nov China Airlines
29 Oct - 05 Nov Frontier Airlines
31 Oct - 16 Nov China Airlines

Also check the deals for one-way flights from Ontario to Seoul in October.

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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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