Cheapest one-way flights from Washington to Seoul in May from $645
AirHint found the following cheapest one-way flights from Washington (IAD) to Seoul (ICN) in May 2025 (see full year).
One-Way flights
| 03 May | Turkish Airlines | ||
| 07 May | Turkish Airlines | ||
| 01 May | Turkish Airlines | ||
| 10 May | Alaska Airlines | ||
| 01 May | Korean Air | direct | |
| 07 May | Delta | direct | |
| 03 May | Korean Air | direct | |
| 10 May | Delta | direct |
Also check the deals for return flights from Washington to Seoul in May.
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.
