Cheapest one-way flights from Washington to Seoul in April from 387€

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

One-Way flights

07 Apr Air China
10 Apr Frontier Airlines
16 Apr Frontier Airlines
08 Apr Alaska Airlines
11 Apr Etihad Airways
24 Apr Alaska Airlines
24 Apr Air Premia direct
16 Apr Korean Air direct
08 Apr Korean Air direct
10 Apr Korean Air direct

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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