Cheapest return flights from Ontario to Seoul in December from $1254

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

03 Dec - 17 Dec China Airlines
01 Dec - 15 Dec China Airlines
05 Dec - 28 Dec China Airlines
28 Dec - 30 Jan China Airlines
17 Dec - 24 Dec China Airlines
11 Dec - 18 Dec China Airlines
11 Dec - 28 Dec China Airlines
25 Dec - 05 Jan China Airlines
27 Dec - 11 Jan China Airlines
14 Dec - 28 Dec China Airlines
15 Dec - 30 Dec China Airlines
22 Dec - 08 Jan Korean Air
19 Dec - 30 Dec China Airlines
21 Dec - 31 Dec China Airlines
22 Dec - 14 Jan China Airlines
19 Dec - 08 Jan Hawaiian Airlines
22 Dec - 06 Jan China Airlines
19 Dec - 04 Jan China Airlines
21 Dec - 04 Jan China Airlines
13 Dec - 01 Jan Qatar Airways

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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