Nonstop flight route between Seoul, South Korea and Cahokia, Illinois (near St. Louis), United States:

About this route:

A direct, nonstop flight between Gimpo International Airport (SEL), Seoul, South Korea and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 6,676 miles (or 10,744 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 Downtown 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 Downtown 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 (SEL):

• 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.
• Gimpo International Airport (SEL) has 2 runways.
• UN Forces resumed the offensive again in late January 1951 and launched Operation Thunderbolt on 25 January with the aim of pushing Chinese and North Korean forces back north of the Han River.
• In 1958 Kimpo was designated as the international airport of the South Korean capital city and has grown into a much more significant airport that is capable of handling 226,000 flights a year.
• The closest airport to Gimpo International Airport (SEL) is Gimpo International Airport (GMP), which is located only 0 mile (0 kilometer) N of SEL.
• Following the Inchon landings on 15 September 1950, the 2nd Battalion 5th Marines was ordered to seize Kimpo on 17 September.
• In addition to being known as "Gimpo International Airport", other names for SEL include "김포국제공항 金浦國際空港", "Gimpo Gukje Gonghang Kimp'o Kukche Konghang", "GMP" and "RKSS".
• Gimpo International Airport handled 19,424,032 passengers last year.
• Following the Chinese Third Phase Campaign and the defeat of UN Forces at the 38th parallel, on 5 January 1951 General Ridgway ordered the evacuation of Seoul and the withdrawal of UN forces to a new defensive line along the 37th parallel.
• The furthest airport from Gimpo International Airport (SEL) 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.

Facts about St. Louis Downtown Airport (CPS):

• The two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
• The airport opened in 1929 as Curtiss-Steinberg Airport.
• Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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.