Nonstop flight route between St. Louis, Missouri, United States and Siem Reap, Cambodia:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Siem Reap-Angkor International Airport (REP), Siem Reap, Cambodia would travel a Great Circle distance of 8,719 miles (or 14,031 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 Siem Reap-Angkor 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 Siem Reap-Angkor 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):

• Lambert–St. Louis International Airport (STL) has 4 runways.
• In the late 1920s, Lambert Field became the first airport with an air traffic control system—albeit one that communicated with pilots via waving flags.
• 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.
• TWA's hub grew again in 1986 when the airline bought Ozark Airlines, which had its hub at Lambert's Concourse D.
• In 2006, the United States Air Force announced plans to turn the 131st Fighter Wing of the Missouri Air National Guard into the 131st Bomb Wing.
• 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.
• 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.
• 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.
• Ozark Airlines established its only hub at Lambert in the late 1950s.
• During the war, the airport became a manufacturing base for McDonnell Aircraft and Curtiss-Wright.

Facts about Siem Reap-Angkor International Airport (REP):

• In addition to being known as "Siem Reap-Angkor International Airport", other names for REP include "សៀមរាបព្រលានយន្តហោះអន្តរជាតិ" and "Aéroport International de Siem Reab".
• Because of Siem Reap-Angkor International Airport's relatively low elevation of 60 feet, planes can take off or land at Siem Reap-Angkor 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 closest airport to Siem Reap-Angkor International Airport (REP) is Battambang Airport (BBM), which is located 45 miles (73 kilometers) WSW of REP.
• Siem Reap-Angkor International Airport (REP) currently has only 1 runway.
• The airport resides at an elevation of 60 feet above mean sea level.
• Siem Reap International Airport is Cambodia's busiest airport serving Siem Reap, a popular tourist destination due to nearby Angkor Wat.
• The furthest airport from Siem Reap-Angkor International Airport (REP) is Capitán FAP Renán Elías Olivera International Airport (PIO), which is nearly antipodal to Siem Reap-Angkor International Airport (meaning Siem Reap-Angkor International Airport is almost on the exact opposite side of the Earth from Capitán FAP Renán Elías Olivera International Airport), and is located 12,414 miles (19,978 kilometers) away in Pisco, Peru.