Nonstop flight route between St. Louis, Missouri, United States and Choibalsan, Mongolia:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Choibalsan Airport (COQ), Choibalsan, Mongolia would travel a Great Circle distance of 6,241 miles (or 10,043 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 Choibalsan 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 Choibalsan 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):

• The September 11, 2001 terrorist attacks were a huge demand shock to air service nationwide, with total airline industry domestic revenue passenger miles dropping 20% in October 2001 and 17% in November 2001.
• Lambert–St. Louis International Airport (STL) has 4 runways.
• In 1985, Southwest Airlines began service, an event that would lead to major changes at the airport in the coming years.
• 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.
• However, TWA faced increasing problems as overall airline demand softened in response to a softening overall 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.
• American Airlines is now the airport's second-busiest operating airline.
• 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.

Facts about Choibalsan Airport (COQ):

• The closest airport to Choibalsan Airport (COQ) is Hulunbuir Hailar Airport (HLD), which is located 248 miles (398 kilometers) ENE of COQ.
• Choibalsan Airport (COQ) currently has only 1 runway.
• Choibalsan Airport handled 6,200 passengers last year.
• The furthest airport from Choibalsan Airport (COQ) is Puerto Deseado Airport (PUD), which is nearly antipodal to Choibalsan Airport (meaning Choibalsan Airport is almost on the exact opposite side of the Earth from Puerto Deseado Airport), and is located 12,399 miles (19,955 kilometers) away in Puerto Deseado, Santa Cruz Province, Argentina.