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

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Asau Airport (AAU), Asau, Samoa would travel a Great Circle distance of 6,401 miles (or 10,301 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 St. Louis Downtown Airport and Asau 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 St. Louis Downtown Airport and Asau 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 St. Louis Downtown Airport (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.
• 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.
• 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.

Facts about Asau Airport (AAU):

• Asau Airport is a small domestic airfield located in the thick dense jungle at the northwest end of Savai'i in Samoa.
• The closest airport to Asau Airport (AAU) is Maota (Salelologa) Airport (MXS), which is located 30 miles (48 kilometers) ESE of AAU.
• In 2003, a cyclone swept past Samoa and most of the South Pacific.
• Samoa Air serves Asau daily.
• Only Twin Otter and Britten-Norman Islander planes can land and take off this small airport, generally because the runway and tarmac cannot handle any other larger and heavier aircraft.
• The furthest airport from Asau Airport (AAU) is Maradi Airport (MFQ), which is nearly antipodal to Asau Airport (meaning Asau Airport is almost on the exact opposite side of the Earth from Maradi Airport), and is located 12,419 miles (19,987 kilometers) away in Maradi, Niger.
• This is a domestic airport which only serves flights in and out of Maota Airport, the main airstrip on Savai'i at the east end of the island, and Faleolo International Airport on the main island Upolu.
• Since then, the airport terminal was rebuilt and a new paved runway was installed.