Cheapest one-way flights from Washington to Seoul in May from $627

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 May 2025 (see full year).

One-Way flights

14 May WestJet
25 May Frontier Airlines
08 May Turkish Airlines
26 May Air Canada
29 May Air Canada
31 May Air Canada
14 May Korean Air direct
08 May Korean Air direct
28 May Korean Air direct
29 May Korean Air direct

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

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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