Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Great Falls, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to GTF:
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- About this route
- CPS Airport Information
- GTF Airport Information
- Facts about CPS
- Facts about GTF
- 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 GTF
- List of Nearest Airports to GTF
- Map of Furthest Airports from GTF
- List of Furthest Airports from GTF
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Great Falls International Airport (GTF), Great Falls, Montana, United States would travel a Great Circle distance of 1,230 miles (or 1,979 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 St. Louis Downtown Airport and Great Falls International Airport, the route shown on this map most likely still appears to be a straight line.
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: | GTF / KGTF |
Airport Names: |
|
Location: | Great Falls, Montana, United States |
GPS Coordinates: | 47°28'58"N by 111°22'14"W |
Area Served: | Great Falls, Montana |
Operator/Owner: | Great Falls International Airport Authority |
Airport Type: | Public |
Elevation: | 3680 feet (1,122 meters) |
# of Runways: | 3 |
View all routes: | Routes from GTF |
More Information: | GTF Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- 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.
- 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.
Facts about Great Falls International Airport (GTF):
- Great Falls International Airport was initiated in November 1928.
- The closest airport to Great Falls International Airport (GTF) is Malmstrom Air Force Base (GFA), which is located only 9 miles (14 kilometers) E of GTF.
- The furthest airport from Great Falls International Airport (GTF) is Sir Gaëtan Duval Airport (RRG), which is located 10,498 miles (16,896 kilometers) away in Rodrigues Island, Mauritius.
- The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 143,811 passenger boardings in calendar year 2008, 146,438 in 2009 and 155,204 in 2010.
- In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
- Great Falls International Airport (GTF) has 3 runways.
- In early 2012 Frontier Airlines announced new flights to Great Falls from the Denver hub.