Cheapest one-way flights from Seoul to Washington in May from $423

Best time to book flights for Seoul (ICN) to Washington (IAD) flights at AirHint

AirHint found the following cheapest one-way flights from Seoul (ICN) to Washington (IAD) in May 2025 (see full year).

One-Way flights

28 May Air Premia
24 May Air Premia
23 May Air Premia
29 May Air Premia
13 May Air Premia
15 May Air Premia
11 May Air Premia
20 May American Airlines
23 May Korean Air direct
15 May Korean Air direct

Also check the deals for return flights from Seoul to Washington 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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