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

Return flights

01 Dec - 05 Dec	Delta
05 Dec - 26 Dec	Delta
15 Dec - 30 Dec	Delta
15 Dec - 31 Dec	Delta
16 Dec - 26 Dec	Frontier Airlines
10 Dec - 31 Dec	Delta
09 Dec - 05 Jan	Frontier Airlines
21 Dec - 10 Jan	Breeze Airways
21 Dec - 31 Dec	Breeze Airways
21 Dec - 06 Jan	Delta
20 Dec - 10 Jan	Frontier Airlines
13 Dec - 03 Jan	Frontier Airlines
18 Dec - 06 Jan	Frontier Airlines
18 Dec - 05 Jan	Frontier Airlines
21 Dec - 03 Jan	Delta
21 Dec - 05 Jan	Delta

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 791€

Return flights