Cheapest one-way flights from Washington to Seoul in April from 453€

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

One-Way flights

29 Apr Air Premia direct
27 Apr Air Premia direct
21 Apr Frontier Airlines
30 Apr Frontier Airlines
17 Apr Frontier Airlines
25 Apr Frontier Airlines
16 Apr Frontier Airlines
15 Apr Turkish Airlines
18 Apr Frontier Airlines
14 Apr Frontier 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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