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

Arrival Airport:

Distance from DEF to CPS:
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- About this route
- DEF Airport Information
- CPS Airport Information
- Facts about DEF
- Facts about CPS
- Map of Nearest Airports to DEF
- List of Nearest Airports to DEF
- Map of Furthest Airports from DEF
- List of Furthest Airports from DEF
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Dezful Airport (DEF), Dezful, Iran and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 6,855 miles (or 11,033 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 Dezful 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 Dezful 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:
IATA / ICAO Codes: | DEF / OIAD |
Airport Name: | Dezful Airport |
Location: | Dezful, Iran |
GPS Coordinates: | 32°26'3"N by 48°23'51"E |
Airport Type: | Military |
# of Runways: | 2 |
View all routes: | Routes from DEF |
More Information: | DEF Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Facts about Dezful Airport (DEF):
- The closest airport to Dezful Airport (DEF) is Khorramabad Airport (KHD), which is located 69 miles (112 kilometers) N of DEF.
- The furthest airport from Dezful Airport (DEF) is Totegegie Airport (GMR), which is located 11,760 miles (18,927 kilometers) away in Mangareva, Gambier Islands, French Polynesia.
- Dezful Airport (DEF) has 2 runways.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- 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.
- 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.
- 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.