Seoul to Seattle (GMP–BFI) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
GMP–BFI had nonstop service from Korean Air, last on the schedule in July 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 5,183 miles in 10h 9m.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| KE Korean Air | 1 | – | – | – | SkyTeam | – |
Travel Essentials
GMP: KST · BFI: PDT
When it's 6:00 PM in Seoul, it's 2:00 AM in Seattle.
South Korean passport holders enter the United States under the Visa Waiver Program (VWP) for up to 90 days for tourism or business. You must obtain an approved ESTA (Electronic System for Travel Authorization) at esta.cbp.dhs.gov before travel. The ESTA costs $21, is processed within 72 hours (often minutes), and is valid for 2 years or until your passport expires, whichever comes first. Passport must be a biometric e-passport.
At US immigration, you clear CBP (Customs and Border Protection) where an officer reviews your ESTA, asks about your trip purpose, takes fingerprints and a photo, and determines your allowed stay (up to 90 days). Have your return ticket, hotel booking, and a general idea of your itinerary ready to answer questions. The 90-day VWP stay cannot be extended, and overstaying voids your ESTA and future VWP eligibility. For stays beyond 90 days or work purposes, apply for a visa at the US Embassy in Seoul.
Direct flights from Seoul Incheon to multiple US cities run 10 to 14 hours: Los Angeles (LAX) 11 hours, San Francisco (SFO) 11 hours 30 minutes, New York JFK 14 hours, Seattle (SEA) 10 hours, Dallas (DFW) 13 hours, and Atlanta (ATL) 14 hours. Korean Air, Asiana, Delta, United, and American all operate transpacific routes. The US uses the US dollar. No mandatory vaccinations. Global Entry ($100, valid 5 years) includes ESTA and provides expedited entry through automated kiosks at major US airports, a strong investment for frequent visitors.
GMP–BFI Quick Facts
Frequently Asked Questions
Flights from GMP to BFI
Gimpo International Airport (GMP) and King County International Airport - Boeing Field (BFI) had nonstop service from Korean Air, last on the schedule in July 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.
GMP to BFI Flight Duration and Schedule
Nonstop flight time from GMP to BFI is about 10 hours 9 minutes gate to gate. The route covers a distance of 5,183 miles (8,341 km).