Cheapest one-way flights from Washington to Seoul in January from $542

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

One-Way flights

15 Jan Turkish Airlines
26 Jan Turkish Airlines
14 Jan Turkish Airlines
18 Jan Turkish Airlines
03 Jan Turkish Airlines
15 Jan Korean Air direct
26 Jan Delta direct
14 Jan Delta direct
18 Jan Korean Air direct
03 Jan Delta direct

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

Skyscanner

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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