Cheapest one-way flights from Ontario to Seoul in December from $560

AirHint found the following cheapest one-way flights from Ontario (ONT) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

06 Dec Alaska Airlines
08 Dec Alaska Airlines
04 Dec Alaska Airlines
25 Dec Alaska Airlines
23 Dec Alaska Airlines
07 Dec Alaska Airlines
02 Dec Alaska Airlines
24 Dec Alaska Airlines
30 Dec Alaska Airlines
01 Dec Alaska Airlines

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

Skyscanner

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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