AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Seoul (ICN) in December 2025 (see full year).

Return flights

06 Dec - 19 Dec	United
08 Dec - 29 Dec	United
10 Dec - 17 Dec	United
15 Dec - 22 Dec	United
13 Dec - 20 Dec	Breeze Airways
13 Dec - 22 Dec	United
16 Dec - 22 Dec	United
10 Dec - 31 Dec	United
15 Dec - 06 Jan	Delta
16 Dec - 08 Jan	Breeze Airways
12 Dec - 31 Dec	Breeze Airways
14 Dec - 06 Jan	Delta
09 Dec - 05 Jan	United
13 Dec - 02 Jan	Frontier Airlines
14 Dec - 02 Jan	Frontier Airlines
15 Dec - 05 Jan	Delta
15 Dec - 02 Jan	Frontier Airlines
17 Dec - 05 Jan	Delta
16 Dec - 05 Jan	Air Canada

Also check the deals for one-way flights from Raleigh-durham 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 Raleigh-durham to Seoul in December from 778€

Return flights