Cheapest return flights from Ontario to Seoul in October from $936

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

Return flights

01 Oct - 22 Oct China Airlines
13 Oct - 27 Oct China Airlines
14 Oct - 22 Oct China Airlines
01 Oct - 29 Oct China Airlines
21 Oct - 11 Nov China Airlines
21 Oct - 19 Nov China Airlines
28 Oct - 11 Nov China Airlines
01 Oct - 08 Oct China Airlines
14 Oct - 04 Nov China Airlines
22 Oct - 05 Nov China Airlines
14 Oct - 12 Nov China Airlines
23 Oct - 06 Nov China Airlines
13 Oct - 19 Nov China Airlines
21 Oct - 06 Nov China Airlines
14 Oct - 28 Oct China Airlines
20 Oct - 11 Nov China Airlines
14 Oct - 31 Oct China Airlines
17 Oct - 27 Oct China Airlines
20 Oct - 31 Oct China Airlines
01 Oct - 31 Oct 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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