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

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Incheon International Airport (ICN), Incheon (near Seoul), South Korea would travel a Great Circle distance of 6,675 miles (or 10,742 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 Lambert–St. Louis International Airport and Incheon 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 Lambert–St. Louis International Airport and Incheon 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 Lambert–St. Louis International Airport (STL):

• American Airline's merger closed in April 2001, and the last TWA flight was flown on December 1, 2001.
• Despite the entry of Southwest Airlines in the market, the TWA buyout of Ozark and subsequent increase in the number of nonstop cities served, the total number of passengers using Lambert held steady from 1985 through 1993, ranging between 19 million and 20 million passengers per year throughout the period.
• On July 16, 2003, AA announced it was significantly reducing its Lambert hub effective November 1, 2003, cutting it from 417 daily flights to 207, effective November 1, 2003.
• Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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.
• Robertson Airlines, Marquette Airlines, and Eastern Air Lines provided passenger service to St.
• In 1925, the airport became home to Naval Air Station St.
• During 2008, Lambert's position as an American Airlines hub faced further pressure due to increased fuel costs and softened demand because of a depressed economy.
• The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
• The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
• Lambert–St. Louis International Airport (STL) has 4 runways.

Facts about Incheon International Airport (ICN):

• The airport was originally planned to be built in three phases, incrementally increasing airport capacity as the demand grew.
• In Phase 1, the airport had a capacity of 30 million passengers per year, and a cargo capacity of 1.7 million metric tonnes yearly.
• 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".
• 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.
• 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.
• Incheon International Airport handled 41,482,828 passengers last year.
• It is connected to the mainland by Incheon International Airport Expressway, a part of which is Yeongjong Bridge.
• Incheon International Airport (ICN) has 3 runways.
• The Cargo Terminal Complex was designed to be able to process 1.7 million tons of cargo per year.
• 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.
• Air traffic increased markedly, and by early 2002, it became apparent that the airport would be saturated by 2006.