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Wondering how long to fly from Seattle to Seoul? A nonstop flight from Seattle to Seoul usually takes around 11 hrs 20 mins to 12 hrs. Flight duration can vary depending on weather conditions, wind direction, aircraft type, and the selected route.
Flights from Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN) are generally fastest when booked nonstop. One-stop flights through cities such as Vancouver, Tokyo, or San Francisco can take around 15 to 22 hrs or more.
Seattle and Seoul are in different time zones. Seoul is generally 16 to 17 hours ahead of Seattle.
For the quickest journey, compare nonstop Seattle to Seoul flights, departure times, airfares, baggage allowances, and airline services before booking.
The average Seattle to Seoul flight time depends on your departure airport, arrival airport, airline, aircraft type, weather, wind direction, and flight path. Most nonstop flights from Seattle to Seoul usually take around 11 hr 40 mins to 12 hr.
Seoul Incheon International Airport (ICN) is the main arrival airport for most international travelers flying from Seattle. Gimpo International Airport (GMP) may appear on some connecting itineraries, but it is an optional choice and does not normally have nonstop flights from Seattle. Seattle-Tacoma International Airport (SEA) is the main departure airport for this route.
| Departure Airport | Arrival Airport | Estimated Flight Time | Travel Tip |
|---|---|---|---|
| Seattle-Tacoma International Airport (SEA) | Seoul Incheon International Airport (ICN) | Around 11 hr 40 mins – 12 hr nonstop | Best option for most travelers, with the strongest choice of nonstop flights to Seoul. |
| Seattle-Tacoma International Airport (SEA) | Gimpo International Airport (GMP) | Usually around 14 hr 30 mins – 18 hr+ with one or more stops | Optional arrival airport. It may be useful for some Seoul itineraries, but nonstop flights from Seattle are not normally available. |
| Seattle Paine Field International Airport (PAE) | Seoul airports (ICN or GMP) | Usually around 16 hr – 24 hr+ with one or more stops | Optional departure airport for travelers north of Seattle. Compare the full journey carefully because Seoul routes require connections. |
For the quickest journey, flights from Seattle-Tacoma International Airport (SEA) to Seoul Incheon International Airport (ICN) are usually the most practical choice. Gimpo International Airport (GMP) and Seattle Paine Field International Airport (PAE) are optional alternatives, but connecting flights may make the total journey longer.
Nonstop flights from Seattle to Seoul run about 11 hours 30 minutes. Korean Air, Asiana Airlines operate direct service on this route.
Connecting flights through hub cities add travel time. Routes through major airports typically take 14 to 18 hours including layover.
Compare both nonstop and connecting options when booking. Sometimes the longer itineraries cost $150 to $300 less than direct flights.
Seoul is 17 hours ahead of Seattle. Plan your arrival time carefully to minimize jet lag impact.
Eastbound flights typically depart in the afternoon or evening and arrive the next day. Westbound return flights often land the same calendar day you depart.
Book 6 to 8 weeks ahead for the best fares. Shoulder season months often offer better deals than peak travel periods.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Seattle Flight Times.
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