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

About this route:

A direct, nonstop flight between Ciampino–G. B. Pastine International Airport (CIA), Rome, Italy and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 5,066 miles (or 8,154 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 Ciampino–G. B. Pastine International Airport 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 Ciampino–G. B. Pastine International Airport 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 Ciampino–G. B. Pastine International Airport (CIA):

• The closest airport to Ciampino–G. B. Pastine International Airport (CIA) is Fiumicino – Leonardo da Vinci International Airport (FCO), which is located only 18 miles (30 kilometers) W of CIA.
• When the combat units moved out, Air Transport Command used the airport as a major transshipment hub for cargo, transiting aircraft and personnel for the remainder of the war.
• In addition to being known as "Ciampino–G. B. Pastine International Airport", other names for CIA include "Rome Ciampino Airport" and "Ciampino–Aeroporto Internazionale G. B. Pastine".
• Ciampino–G. B. Pastine International Airport handled 4,749,251 passengers last year.
• Ciampino–G. B. Pastine International Airport (CIA) currently has only 1 runway.
• The terminals were extended at the beginning of 2007.
• Because of Ciampino–G. B. Pastine International Airport's relatively low elevation of 427 feet, planes can take off or land at Ciampino–G. B. Pastine 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.
• The furthest airport from Ciampino–G. B. Pastine International Airport (CIA) is Chatham Islands (CHT), which is located 11,958 miles (19,244 kilometers) away in Waitangi, Chatham Islands, New Zealand.

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 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.
• 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.