Cheapest one-way flights from Ontario to Seoul in December from $628

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

One-Way flights

30 Dec Hawaiian Airlines
03 Dec China Airlines
24 Dec Alaska Airlines
05 Dec China Airlines
29 Dec China Airlines
09 Dec China Airlines
25 Dec Alaska Airlines
22 Dec Alaska Airlines
26 Dec Korean Air
28 Dec China 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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Feel free to contact us with any feedback or request another flight research.