Nonstop flight route between Ruislip, England, United Kingdom and Cahokia, Illinois (near St. Louis), United States:

About this route:

A direct, nonstop flight between RAF Northolt (NHT), Ruislip, England, United Kingdom and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 4,189 miles (or 6,741 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 RAF Northolt 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 RAF Northolt 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 RAF Northolt (NHT):

• The overnight base of the London Air Ambulance moved to RAF Northolt from Denham Aerodrome in February 2013.
• Construction of the new aerodrome, to be named "RFC Military School, Ruislip", began in January 1915.
• On 1 June 1960, an Avro Anson aircraft suffered engine failure soon after take-off from Northolt and crash-landed on top of the nearby Express Dairies plant in South Ruislip.
• The furthest airport from RAF Northolt (NHT) is Chatham Islands (CHT), which is located 11,871 miles (19,105 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• In August 1996, a Spanish Learjet operated by Mar Aviation overshot runway 25 and collided with a van heading eastward on the A40 Western Avenue.
• The closest airport to RAF Northolt (NHT) is London Heathrow Airport (LHR), which is located only 6 miles (9 kilometers) SSW of NHT.
• RAF Northolt became home to Prime Minister Winston Churchill's personal aircraft, a modified Douglas C-54 Skymaster, in June 1944.
• Attention was high again in 2001 when Ronnie Biggs, the seriously ill, fugitive Great Train Robber, was flown from Brazil to the airfield to be arrested by waiting police officers.

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.
• The airport opened in 1929 as Curtiss-Steinberg Airport.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The airport closed in 1959 and reopened six years later as Bi-State Parks 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.