Cheapest one-way flights from Washington to Seoul in October from $580

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

One-Way flights

14 Oct Alaska Airlines
17 Oct Alaska Airlines
15 Oct Alaska Airlines
11 Oct Alaska Airlines
10 Oct Alaska Airlines
09 Oct American Airlines

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

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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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