Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Butterworth, Penang, Malaysia:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and RMAF Butterworth (BWH), Butterworth, Penang, Malaysia would travel a Great Circle distance of 9,320 miles (or 14,999 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 RMAF Butterworth, 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 RMAF Butterworth. 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.
• 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 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.
• St. Louis Downtown Airport (CPS) has 3 runways.

Facts about RMAF Butterworth (BWH):

• In 1957, the RAF closed the station and it was transferred to the Royal Australian Air Force and it was promptly renamed as RAAF Station Butterworth, becoming the home to numerous Australian fighter and bomber squadrons stationed in Malaya during the Cold War era.
• The furthest airport from RMAF Butterworth (BWH) is Cap. FAP Guillermo Concha Iberico International Airport (PIU), which is nearly antipodal to RMAF Butterworth (meaning RMAF Butterworth is almost on the exact opposite side of the Earth from Cap. FAP Guillermo Concha Iberico International Airport), and is located 12,365 miles (19,900 kilometers) away in Piura, Peru.
• In addition to being known as "RMAF Butterworth", another name for BWH is "TUDM Butterworth".
• RMAF Butterworth (BWH) currently has only 1 runway.
• The closest airport to RMAF Butterworth (BWH) is RMAF Butterworth (UTE), which is located only 0 mile (0 kilometer) N of BWH.
• Because of RMAF Butterworth's relatively low elevation of 8 feet, planes can take off or land at RMAF Butterworth 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.
• Another notable unit was the No.