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

Arrival Airport:

Distance from MDT to CPS:
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- About this route
- MDT Airport Information
- CPS Airport Information
- Facts about MDT
- Facts about CPS
- Map of Nearest Airports to MDT
- List of Nearest Airports to MDT
- Map of Furthest Airports from MDT
- List of Furthest Airports from MDT
- 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 Harrisburg International Airport (MDT), Harrisburg, Pennsylvania, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 723 miles (or 1,164 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 Harrisburg International 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: | MDT / KMDT |
Airport Name: | Harrisburg International Airport |
Location: | Harrisburg, Pennsylvania, United States |
GPS Coordinates: | 40°11'35"N by 76°45'47"W |
Area Served: | Harrisburg, Pennsylvania |
Airport Type: | Public |
Elevation: | 310 feet (94 meters) |
# of Runways: | 1 |
View all routes: | Routes from MDT |
More Information: | MDT 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 Harrisburg International Airport (MDT):
- Because of Harrisburg International Airport's relatively low elevation of 310 feet, planes can take off or land at Harrisburg 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.
- Built in 2004, and attached to the new terminal building via a climate-controlled sky bridge, the Multi-Modal Transportation Facility is a four-story facility that handles all ground transportation.
- The closest airport to Harrisburg International Airport (MDT) is Capital City Airport (HAR), which is located only 5 miles (8 kilometers) WNW of MDT.
- Route 7 of the Capital Area Transit System runs to downtown Harrisburg and surrounding communities.
- The terminal has 12 gates and is a pier finger lay out near the middle of the airfield, almost parallel to the runway.
- The furthest airport from Harrisburg International Airport (MDT) is Margaret River Airport (MGV), which is located 11,654 miles (18,755 kilometers) away in Margaret River, Western Australia, Australia.
- In 1998 the Commonwealth transferred ownership to the Susquehanna Area Regional Airport Authority.
- Harrisburg International Airport (MDT) currently has only 1 runway.
- Harrisburg International Airport covers 680 acres at an elevation of 310 feet above mean sea level.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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 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.