Cheapest return flights from Ontario to Seoul in October from $1115

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 October 2025 (see full year).

Return flights

23 Oct - 29 Oct China Airlines
16 Oct - 23 Oct China Airlines
19 Oct - 02 Nov China Airlines
24 Oct - 29 Oct China Airlines
13 Oct - 27 Oct China Airlines
26 Oct - 09 Nov China Airlines
29 Oct - 05 Nov China Airlines
02 Oct - 23 Oct Korean Air
02 Oct - 16 Oct China Airlines
13 Oct - 22 Oct China Airlines
01 Oct - 23 Oct China Airlines
19 Oct - 27 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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