Cheapest one-way flights from Washington to Seoul in April from $427

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

One-Way flights

10 Apr Air China
06 Apr EVA Air
22 Apr EVA Air
15 Apr EVA Air
01 Apr Qatar Airways
05 Apr EVA Air
25 Apr ANA
11 Apr ANA
03 Apr ANA

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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