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

Arrival Airport:

Distance from IPL to CPS:
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- About this route
- IPL Airport Information
- CPS Airport Information
- Facts about IPL
- Facts about CPS
- Map of Nearest Airports to IPL
- List of Nearest Airports to IPL
- Map of Furthest Airports from IPL
- List of Furthest Airports from IPL
- 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 Imperial County Airport (IPL), Imperial, California, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 1,475 miles (or 2,374 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 Imperial County Airport and St. Louis Downtown Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | IPL / KIPL |
Airport Names: |
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Location: | Imperial, California, United States |
GPS Coordinates: | 32°50'3"N by 115°34'42"W |
Area Served: | Imperial / El Centro |
Operator/Owner: | Imperial County |
Airport Type: | Public |
# of Runways: | 2 |
View all routes: | Routes from IPL |
More Information: | IPL 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 |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Facts about Imperial County Airport (IPL):
- The furthest airport from Imperial County Airport (IPL) is Sir Gaëtan Duval Airport (RRG), which is located 11,531 miles (18,557 kilometers) away in Rodrigues Island, Mauritius.
- In addition to being known as "Imperial County Airport", another name for IPL is "Boley Field".
- Its first airline flights were Bonanza DC-3s about 1953.
- Because of Imperial County Airport's relatively low elevation of -54 feet, planes can take off or land at Imperial County 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 Imperial County Airport (IPL) is Naval Air Facility El Centro (NJK), which is located only 5 miles (9 kilometers) W of IPL.
- Imperial County Airport (IPL) has 2 runways.
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 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 airport closed in 1959 and reopened six years later as Bi-State Parks 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.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.