Seattle to Seoul Flight Time & Schedules

How Long Is the Flight From Seattle to Seoul?

The Seattle to Seoul flight time is usually around 11 hours 20 minutes to 12 hours 20 minutes for a nonstop journey. Flights operate from Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN), connecting the Pacific Northwest with South Korea’s largest international gateway.

The route covers approximately 5,200 miles (8,400 km) and involves a long Pacific Ocean crossing. Actual flight duration can vary depending on wind conditions, aircraft type, seasonal schedules, and daily flight operations.

For travellers looking for the shortest journey, nonstop flights are generally the most convenient option. Connecting flights are also available through major Asian and North American hubs, but they usually add additional travel time due to the stopover

Seattle to Seoul Flight Time Overview

Departure Airport

Seattle-Tacoma International Airport (SEA)

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Arrival Airport

Incheon International Airport (ICN)

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Distance Between Cities

Around 5,200 miles (8,400 km)

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Nonstop Flight Duration

Approximately 11 hours 20 minutes – 12 hours 20 minutes

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Route Type

Direct and connecting flights available

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Main Destination Airport

Incheon International Airport

Direct Flights From Seattle to Seoul

Travellers can fly nonstop from Seattle (SEA) to Seoul (ICN) without changing aircraft. Direct services are the fastest way to complete this transpacific journey and are ideal for passengers who want to minimise overall travel time.
Nonstop flights are commonly operated by airlines such as:

Korean Air

Alaska Airlines

Asiana Airlines

Delta Air Lines

Seattle to Seoul Flight Duration Overview

Flights from Seattle to Seoul vary depending on whether passengers choose a direct service or a connecting itinerary. Nonstop flights are the quickest option, usually taking between 11 hours 5 minutes and 12 hours.

Connecting flights generally take around 14 hours 45 minutes to 15 hours 30 minutes, depending on the stopover airport and waiting time between flights.

The direct flight from Seattle-Tacoma International Airport (SEA) to Seoul Incheon International Airport (ICN) is one of the fastest ways to travel between the two cities.

Nonstop services generally take between 11 hours 5 minutes and 12 hours, allowing passengers to complete the Pacific crossing without changing aircraft.

Travellers who do not choose a nonstop service can fly through international hubs such as Vancouver and Tokyo.

A connecting flight through Vancouver International Airport takes around 15 hours 30 minutes, while routes via Tokyo Narita International Airport can take approximately 14 hours 45 minutes.

The final journey time depends on the connection duration, airline schedule and airport transfer process.

Seattle to Seoul Flight Time by Airport

Departure Airport	Arrival Airport	Route Code	Estimated Flight Time
Seattle-Tacoma International Airport (SEA)	Seoul Incheon International Airport (ICN)	SEA–ICN	Around 11 hrs 5 mins nonstop
Seattle-Tacoma International Airport (SEA)	Seoul Incheon International Airport (ICN)	SEA–ICN	Around 11 hrs 20 mins nonstop
Seattle-Tacoma International Airport (SEA)	Seoul Incheon International Airport (ICN)	SEA–ICN	Around 12 hrs nonstop

One-Stop Connecting Flight Duration from Seattle to Seoul

Departure Airport	Stopover Airport	Arrival Airport	Route Code	Approximate Flight Duration
Seattle-Tacoma International Airport (SEA)	Vancouver International Airport (YVR)	Seoul Incheon International Airport (ICN)	SEA–YVR–ICN	Around 15 hrs 30 mins with one stop
Seattle-Tacoma International Airport (SEA)	Tokyo Narita International Airport (NRT)	Seoul Incheon International Airport (ICN)	SEA–NRT–ICN	Around 14 hrs 45 mins with one stop

Seattle and Seoul Time Difference

Seattle and Seoul have a significant time difference due to their locations in different time zones.

Seoul follows Korea Standard Time (KST) throughout the year, while Seattle follows Pacific Time (PT) with daylight saving changes.

Seoul is generally 16 hours ahead of Seattle during daylight saving time and 17 hours ahead during standard time.

Travellers should consider this time difference when planning arrival schedules, meetings or onward connections.

Explore More Flight Times & Routes

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.