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

About this route:

A direct, nonstop flight between Tehran Imam Khomeini International Airport (IKA), Tehran, Iran and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 6,759 miles (or 10,877 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 Tehran Imam Khomeini 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 Tehran Imam Khomeini 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 Tehran Imam Khomeini International Airport (IKA):

• TAV officials were ordered to withdraw their personnel and equipment from the airport on 7 May 2004, and operations were handed over to Iran Air.
• On 26 October 2007, it was announced that as of 28 October 2007 at midnight, all international flights except those bound to and from Damascus, Jeddah and Medina were transferred to the Imam Khomeini International Airport and the IKA became Tehran's primary international airport.
• On 11 May, in a meeting of the Turkish Foreign Ministry Undersecretary Ugur Ziyal and Iranian Foreign Minister Kamal Kharrazi, the Turkish expressed uneasiness about the actions of the Iranian armed forces.
• After the Iranian Revolution, the project was abandoned until the government of Iran decided to design and build the airport using local know-how.
• The closest airport to Tehran Imam Khomeini International Airport (IKA) is Mehrabad Airport (THR), which is located 21 miles (34 kilometers) NNE of IKA.
• The furthest airport from Tehran Imam Khomeini International Airport (IKA) is Totegegie Airport (GMR), which is located 11,511 miles (18,525 kilometers) away in Mangareva, Gambier Islands, French Polynesia.
• In addition to being known as "Tehran Imam Khomeini International Airport", another name for IKA is "فرودگاه امام خمینی".
• The construction began before the Iranian Revolution of 1979.
• Tehran Imam Khomeini International Airport (IKA) has 2 runways.
• Tehran Imam Khomeini International Airport handled 4,986,477 passengers last year.

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