Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Lonely, North Slope Borough, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to LNI:
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- About this route
- CPS Airport Information
- LNI Airport Information
- Facts about CPS
- Facts about LNI
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
- Map of Nearest Airports to LNI
- List of Nearest Airports to LNI
- Map of Furthest Airports from LNI
- List of Furthest Airports from LNI
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Point Lonely Short Range Radar Site (LNI), Lonely, North Slope Borough, Alaska, United States would travel a Great Circle distance of 3,121 miles (or 5,023 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 St. Louis Downtown Airport and Point Lonely Short Range Radar Site, 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 St. Louis Downtown Airport and Point Lonely Short Range Radar Site. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | LNI / PALN |
Airport Names: |
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Location: | Lonely, North Slope Borough, Alaska, United States |
GPS Coordinates: | 70°54'38"N by 153°14'31"W |
Operator/Owner: | U.S. Air Force |
Airport Type: | Military |
Elevation: | 17 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from LNI |
More Information: | LNI Maps & Info |
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 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 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.
Facts about Point Lonely Short Range Radar Site (LNI):
- The airstrip was built in 1957 to support the Distant Early Warning Line radar station at Point Lonely.
- The closest airport to Point Lonely Short Range Radar Site (LNI) is Alpine Airstrip (DQH), which is located 66 miles (106 kilometers) SE of LNI.
- Point Lonely Short Range Radar Site (LNI) currently has only 1 runway.
- The furthest airport from Point Lonely Short Range Radar Site (LNI) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,219 miles (16,447 kilometers) away in Villa Las Estrellas, Antarctica.
- In addition to being known as "Point Lonely Short Range Radar Site", other names for LNI include " " and "AK71".
- Because of Point Lonely Short Range Radar Site's relatively low elevation of 17 feet, planes can take off or land at Point Lonely Short Range Radar Site 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.