AirHint found the following cheapest return flights from Columbus (CMH) to Seoul (ICN) in December 2025 (see full year).

Return flights

11 Dec - 11 Jan	Delta
10 Dec - 08 Jan	United
12 Dec - 15 Jan	Korean Air
17 Dec - 14 Jan	Spirit Airlines
12 Dec - 12 Jan	Delta
18 Dec - 14 Jan	Delta
18 Dec - 15 Jan	Delta
24 Dec - 31 Dec	Delta
22 Dec - 08 Jan	Delta
13 Dec - 07 Jan	Delta
22 Dec - 07 Jan	Delta

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

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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Cheapest return flights from Columbus to Seoul in December from $1402

Return flights