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

Arrival Airport:

Distance from CPS to IAG:
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- About this route
- CPS Airport Information
- IAG Airport Information
- Facts about CPS
- Facts about IAG
- 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 IAG
- List of Nearest Airports to IAG
- Map of Furthest Airports from IAG
- List of Furthest Airports from IAG
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Niagara Falls International Airport (IAG), Niagara Falls, New York, United States would travel a Great Circle distance of 664 miles (or 1,068 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 Niagara 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: | IAG / KIAG |
Airport Name: | Niagara Falls International Airport |
Location: | Niagara Falls, New York, United States |
GPS Coordinates: | 43°6'25"N by 78°56'45"W |
Airport Type: | Public / Military |
Elevation: | 589 feet (180 meters) |
# of Runways: | 3 |
View all routes: | Routes from IAG |
More Information: | IAG Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.
- 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.
Facts about Niagara Falls International Airport (IAG):
- Because of Niagara Falls International Airport's relatively low elevation of 589 feet, planes can take off or land at Niagara Falls International 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.
- American Airlines stopped at Niagara Falls until 1956.
- The closest airport to Niagara Falls International Airport (IAG) is St. Catharines/Niagara District Airport (YCM), which is located only 13 miles (21 kilometers) WNW of IAG.
- Niagara Falls International Airport (IAG) has 3 runways.
- Niagara Falls International Airport handled 200,000 passengers last year.
- In November 2010 Vision Airlines announced service to Destin/Fort Walton Beach, FL and Miami, FL.
- The furthest airport from Niagara Falls International Airport (IAG) is Margaret River Airport (MGV), which is located 11,450 miles (18,427 kilometers) away in Margaret River, Western Australia, Australia.
- The FAA's National Plan of Integrated Airport Systems for 2011–2015 classified Niagara Falls International as a reliever airport.
- The United States Army Air Forces assumed jurisdiction of the airport during the war, with the 3522d Army Air Force Base Unit managing the airport and coordinating use of the airfield with Bell Aircraft.