Incheon International Airport (ICN) serves Seoul; Seattle Tacoma International Airport (SEA) serves Seattle.
The airports are 5,203 miles apart by great-circle distance.
Roame's current schedule feed shows nonstop service from ICN to SEA.
Marketing airlines listed in the current schedule, including codeshare sellers, are Alaska Airlines (AS), Delta Air Lines (DL), Etihad Airways (EY), Korean Air (KE) and Asiana Airlines (OZ). This list does not identify the operating airline for each flight; check the flight details before booking.
Published schedule dates span Oct 19, 2026 – Oct 6, 2027.