Cheapest one-way flights from Washington to Seoul in May from 459€

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

One-Way flights

16 May Frontier Airlines
10 May Etihad Airways
13 May Frontier Airlines
15 May WestJet
04 May Alaska Airlines
14 May Frontier Airlines
28 May SWISS
12 May China Airlines
27 May Air Canada
25 May Air Canada

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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