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

Arrival Airport:

Distance from HRO to CPS:
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- About this route
- HRO Airport Information
- CPS Airport Information
- Facts about HRO
- Facts about CPS
- Map of Nearest Airports to HRO
- List of Nearest Airports to HRO
- Map of Furthest Airports from HRO
- List of Furthest Airports from HRO
- 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 Boone County Airport (HRO), Harrison, Arkansas, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 229 miles (or 369 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 Boone 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: | HRO / KHRO |
Airport Names: |
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Location: | Harrison, Arkansas, United States |
GPS Coordinates: | 36°15'41"N by 93°9'16"W |
Area Served: | Harrison, Arkansas |
Operator/Owner: | Boone County |
Airport Type: | Public |
Elevation: | 1365 feet (416 meters) |
# of Runways: | 1 |
View all routes: | Routes from HRO |
More Information: | HRO 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 Boone County Airport (HRO):
- The furthest airport from Boone County Airport (HRO) is Margaret River Airport (MGV), which is located 10,837 miles (17,441 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Boone County Airport (HRO) is Branson Airport (BKG), which is located only 19 miles (30 kilometers) N of HRO.
- Boone County Airport (HRO) currently has only 1 runway.
- In addition to being known as "Boone County Airport", another name for HRO is "Boone County Regional Airport".
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.
- 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.
- 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.