Nonstop flight route between Sioux City, Iowa, United States and Cahokia, Illinois (near St. Louis), United States:

About this route:

A direct, nonstop flight between Sioux Gateway Airport (SUX), Sioux City, Iowa, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 421 miles (or 677 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 relatively short distance between Sioux Gateway Airport and St. Louis Downtown Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Sioux Gateway Airport (SUX):

• Sioux Gateway Airport (SUX) has 2 runways.
• The closest airport to Sioux Gateway Airport (SUX) is Le Mars Municipal Airport (LRJ), which is located 28 miles (45 kilometers) NNE of SUX.
• In July 2011, Delta Air Lines told the United States Department of Transportation that a weak economy and lower seat demand would force the company to reduce flights to several smaller communities including Sioux City unless it received assistance from the federal government.
• The airport designator "SUX" has been contentious.
• In addition to being known as "Sioux Gateway Airport", another name for SUX is "Colonel Bud Day Field".
• The furthest airport from Sioux Gateway Airport (SUX) is Margaret River Airport (MGV), which is located 10,641 miles (17,125 kilometers) away in Margaret River, Western Australia, Australia.
• Sioux City Army Air Base closed in December 1945, but in September 1946 the airfield was opened by the Air Force Reserve.
• The airport is home to the 185th Air Refueling Wing, an Air Mobility Command -gained unit of the Iowa Air National Guard, flying the KC-135 Stratotanker, as well as Sioux City Air National Guard Base.

Facts about St. Louis Downtown Airport (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.
• St. Louis Downtown Airport (CPS) has 3 runways.
• 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.
• 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.
• Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
• 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.