Cheapest one-way flights from Washington to Seoul in April from $310

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

07 Apr SWISS
08 Apr Lufthansa
16 Apr Alaska Airlines
19 Apr Hawaiian Airlines
23 Apr Hawaiian Airlines
03 Apr Alaska Airlines
04 Apr Hawaiian Airlines
22 Apr Turkish Airlines
30 Apr Turkish Airlines
18 Apr Air Canada

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

Skyscanner

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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