Cheapest one-way flights from Ontario to Seoul in January from $677

Best time to book flights for Ontario (ONT) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest one-way flights from Ontario (ONT) to Seoul (ICN) in January 2026 (see full year).

One-Way flights

05 Jan Alaska Airlines
06 Jan Alaska Airlines
26 Jan Alaska Airlines
27 Jan China Airlines
31 Jan Alaska Airlines
17 Jan Alaska Airlines
24 Jan Alaska Airlines
14 Jan China Airlines
19 Jan China Airlines
28 Jan China Airlines

Also check the deals for return flights from Ontario to Seoul in January.

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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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