Nonstop flight route between Seoul, South Korea and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Gimpo International Airport (GMP), Seoul, South Korea and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 6,659 miles (or 10,717 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 Gimpo International Airport and St. Louis Regional 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 Gimpo International Airport and St. Louis Regional 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 Gimpo International Airport (GMP):

• Gimpo International Airport handled 19,424,032 passengers last year.
• Gimpo International Airport (GMP) has 2 runways.
• The airport is located south of the Han River in western Seoul.
• Following the Inchon landings on 15 September 1950, the 2nd Battalion 5th Marines was ordered to seize Kimpo on 17 September.
• The furthest airport from Gimpo International Airport (GMP) is Villa Gesell Airport (VLG), which is nearly antipodal to Gimpo International Airport (meaning Gimpo International Airport is almost on the exact opposite side of the Earth from Villa Gesell Airport), and is located 12,226 miles (19,676 kilometers) away in Villa Gesell, Buenos Aires, Argentina.
• Gimpo International Airport, commonly known as Gimpo Airport, is located in the far western end of Seoul, some 15 km west of the Central District of Seoul.
• The closest airport to Gimpo International Airport (GMP) is Gimpo International Airport (SEL), which is located only 0 mile (0 kilometer) N of GMP.
• Because of Gimpo International Airport's relatively low elevation of 58 feet, planes can take off or land at Gimpo 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.
• In addition to being known as "Gimpo International Airport", other names for GMP include "김포국제공항 金浦國際空港" and "Gimpo Gukje Gonghang Kimp'o Kukche Konghang".

Facts about St. Louis Regional Airport (ALN):

• The closest airport to St. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.
• In the spring of 2004 the airport was at the center of a scandal.
• St. Louis Regional Airport (ALN) has 2 runways.
• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• The furthest airport from St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
• The 2,250 acres airfield sits at 544 ft MSL.
• Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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.