Cheapest one-way flights from Washington to Seoul in May from $517

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

One-Way flights

04 May Frontier Airlines
09 May Etihad Airways
08 May Icelandair
20 May Porter Airlines (Canada) Ltd
01 May Etihad Airways
24 May Porter Airlines (Canada) Ltd
01 May Air Premia direct
04 May Air Premia direct
08 May Air Premia direct
31 May Lufthansa

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

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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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