Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Exmouth, Western Australia, Australia:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and RAAF Learmonth (LEA), Exmouth, Western Australia, Australia would travel a Great Circle distance of 10,614 miles (or 17,081 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 RAAF Learmonth, 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 RAAF Learmonth. 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 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.
• Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
• 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.
• St. Louis Downtown Airport (CPS) has 3 runways.
• 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.

Facts about RAAF Learmonth (LEA):

• Learmonth Airport was ranked 49th in Australia for the number of revenue passengers served in financial year 2012-2013.
• RAAF Learmonth (LEA) currently has only 1 runway.
• In the mid-1960s, the Federal Government gave its support to plans by the Chief of the Air Staff, Air Marshal Val Hancock, to redevelop Learmonth as a 'bare base', due to its proximity to Indonesia.
• RAAF Learmonth handled 90,861 passengers last year.
• In addition to being known as "RAAF Learmonth", another name for LEA is "Learmonth Airport".
• The furthest airport from RAAF Learmonth (LEA) is Fernando Luis Ribas Dominicci Airport (SIG), which is nearly antipodal to RAAF Learmonth (meaning RAAF Learmonth is almost on the exact opposite side of the Earth from Fernando Luis Ribas Dominicci Airport), and is located 12,175 miles (19,594 kilometers) away in San Juan, Puerto Rico.
• Because of RAAF Learmonth's relatively low elevation of 19 feet, planes can take off or land at RAAF Learmonth 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.
• On 7 October 2008, Qantas Flight 72 made an emergency landing at RAAF Learmonth.
• The closest airport to RAAF Learmonth (LEA) is Barrow Island Airport (BWB), which is located 127 miles (204 kilometers) NE of LEA.