Cheapest return flights from Ontario to Seoul in December from $1259

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 December 2025 (see full year).

Return flights

01 Dec - 08 Dec China Airlines
04 Dec - 07 Dec China Airlines
01 Dec - 31 Dec China Airlines
08 Dec - 19 Dec China Airlines
10 Dec - 31 Dec China Airlines
28 Dec - 09 Jan Korean Air
15 Dec - 31 Dec China Airlines
17 Dec - 31 Dec China Airlines
18 Dec - 31 Dec China Airlines
14 Dec - 31 Dec China Airlines
20 Dec - 31 Dec China Airlines
23 Dec - 01 Jan Korean Air
27 Dec - 02 Jan China Airlines
26 Dec - 03 Jan Korean Air
21 Dec - 01 Jan Hawaiian Airlines
24 Dec - 03 Jan Korean Air
20 Dec - 02 Jan Alaska Airlines
19 Dec - 02 Jan Korean Air
19 Dec - 04 Jan China Airlines
20 Dec - 04 Jan China Airlines

Also check the deals for one-way flights from Ontario to Seoul in December.

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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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