Nonstop flight route between Vientiane, Laos and Cahokia, Illinois (near St. Louis), United States:

About this route:

A direct, nonstop flight between Wattay International Airport (VTE), Vientiane, Laos and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 8,443 miles (or 13,588 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 Wattay 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 Wattay 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 Wattay International Airport (VTE):

• The airport is in Sikhodtabong District in Vientiane.
• The closest airport to Wattay International Airport (VTE) is Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH), which is located 44 miles (71 kilometers) SSE of VTE.
• In addition to being known as "Wattay International Airport", other names for VTE include "ສະໜາມບິນສາກົນວັດໄຕ" and "สนามบินนานาชาติวัตไต".
• The airport has a bonded warehouse building for air cargo passing through the airport.
• Because of Wattay International Airport's relatively low elevation of 564 feet, planes can take off or land at Wattay 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.
• Wattay International Airport is one of the few international airports in Laos.
• Wattay International Airport (VTE) currently has only 1 runway.
• The furthest airport from Wattay International Airport (VTE) is Maria Reiche Neuman Airport (NZC), which is nearly antipodal to Wattay International Airport (meaning Wattay International Airport is almost on the exact opposite side of the Earth from Maria Reiche Neuman Airport), and is located 12,165 miles (19,578 kilometers) away in Nazca, Ica Region, Peru.

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 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.
• 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.
• The airport opened in 1929 as Curtiss-Steinberg Airport.
• 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.