Cheapest one-way flights from Washington to Seoul in January from $426

AirHint found the following cheapest one-way flights from Washington (IAD) to Seoul (GMP) in January 2026 (see full year).

One-Way flights

13 Jan Air China
07 Jan Frontier Airlines
31 Jan Hawaiian Airlines
24 Jan Hawaiian Airlines
14 Jan Hawaiian Airlines
30 Jan STARLUX Airlines
23 Jan Hawaiian Airlines
12 Jan Alaska Airlines
09 Jan Qatar Airways
21 Jan Alaska Airlines

Also check the deals for return flights from Washington to Seoul in January.

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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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