Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Fiumicino (near Rome), Italy:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Fiumicino – Leonardo da Vinci International Airport (FCO), Fiumicino (near Rome), Italy would travel a Great Circle distance of 5,052 miles (or 8,130 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 Fiumicino – Leonardo da Vinci International 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 Fiumicino – Leonardo da Vinci International 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):

• Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
• 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.
• 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.
• 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.

Facts about Fiumicino – Leonardo da Vinci International Airport (FCO):

• Because of Fiumicino – Leonardo da Vinci International Airport's relatively low elevation of 13 feet, planes can take off or land at Fiumicino – Leonardo da Vinci 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.
• In addition to being known as "Fiumicino – Leonardo da Vinci International Airport", another name for FCO is "Fiumicino – Aeroporto Internazionale Leonardo da Vinci".
• The closest airport to Fiumicino – Leonardo da Vinci International Airport (FCO) is Ciampino–G. B. Pastine International Airport (CIA), which is located only 18 miles (30 kilometers) E of FCO.
• Fiumicino – Leonardo da Vinci International Airport (FCO) has 4 runways.
• Since 2005 the airport operates a category III B instrument landing system.
• From the 1960s until the 1980s, the airport experienced significant aircraft hijackings as well as being the scene of two major terrorist attacks and the port of origin for an aircraft bombing in flight—some engendered by the Israeli-Palestinian conflict.
• Fiumicino Aeroporto railway station is served by the Leonardo Express train operated by Trenitalia, available at the airport terminal.
• The furthest airport from Fiumicino – Leonardo da Vinci International Airport (FCO) is Chatham Islands (CHT), which is located 11,975 miles (19,272 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• In 2009, the terminals were renamed — A was renamed T1, AA was renamed T2, B and C became T3 and T5 stayed the same.
• Security Services transferred from the Polizia di Stato to Aeroporti di Roma in 2000.
• Fiumicino – Leonardo da Vinci International Airport handled 36,166,345 passengers last year.
• The airport was officially opened on 15 January 1961, with two runways, replacing the smaller Rome Ciampino Airport, which remains in service for some low cost airlines as well as domestic and charter operations.