Cheapest one-way flights from Washington to Seoul in April from $465

Best time to book flights for Washington (IAD) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest one-way flights from Washington (IAD) to Seoul (ICN) in April 2025 (see full year).

One-Way flights

23 Apr Alaska Airlines
19 Apr Air China
22 Apr Air China
24 Apr Frontier Airlines
05 Apr Air China
29 Apr Hawaiian Airlines
15 Apr Frontier Airlines
21 Apr Turkish Airlines
14 Apr Turkish Airlines
20 Apr Hawaiian Airlines

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

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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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