Nonstop flight route between Incheon (near Seoul), South Korea and SeaTac (near Seattle and Tacoma), Washington, United States:

About this route:

A direct, nonstop flight between Incheon International Airport (ICN), Incheon (near Seoul), South Korea and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 5,204 miles (or 8,374 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Incheon International Airport and Seattle–Tacoma International Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Incheon International Airport and Seattle–Tacoma International Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Incheon International Airport (ICN):

• Incheon International Airport (ICN) has 3 runways.
• The closest airport to Incheon International Airport (ICN) is Gimpo International Airport (GMP), which is located 20 miles (33 kilometers) ENE of ICN.
• The airport opened for business in early 2001 to replace the older Gimpo International Airport, which now serves mostly domestic destinations plus shuttle flights to alternate airports in China, Japan, and Taiwan.
• Located at the center of the airport, the 22 story Control Tower is 100.4 metres tall and is illuminated 24 hours a day.
• The furthest airport from Incheon International Airport (ICN) is Villa Gesell Airport (VLG), which is nearly antipodal to Incheon International Airport (meaning Incheon International Airport is almost on the exact opposite side of the Earth from Villa Gesell Airport), and is located 12,246 miles (19,707 kilometers) away in Villa Gesell, Buenos Aires, Argentina.
• Plans to invest ₩4 trillion by 2017 to expand Incheon International Airport.
• In addition to being known as "Incheon International Airport", other names for ICN include "인천국제공항 仁川國際空港" and "Incheon Gukje Gonghang Inch'ŏn Kukche Konghang".
• Incheon International Airport handled 41,482,828 passengers last year.
• Because of Incheon International Airport's relatively low elevation of 23 feet, planes can take off or land at Incheon International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• The passenger concourse was completed at the end of May 2008, and all foreign airlines use this terminal as of 10 June 2008.
• After the Seoul Olympics of 1988, international air traffic to Korea increased.

Facts about Seattle–Tacoma International Airport (SEA):

• Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• The April 1957 OAG shows 216 departures a week on United, 80 Northwest, 35 Western, 21 Trans-Canada, 20 Pan Am, 20 Pacific Northern, and 10 Alaska.
• The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.
• The two-story North Concourse added four new gate positions and a new wing 600 feet long and 30 feet wide.
• Interstate 5 and its offshoot Interstate 405 intersect very close to the airport, and most people use private vehicles to arrive at the airport.
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• The top five carriers at the airport in number of passengers carried in 2012 were Alaska Airlines, Horizon Air, Delta Air Lines, Southwest Airlines, and United Airlines.
• The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
• The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.