Nonstop flight route between Fort Sill, Oklahoma, United States and Clinton, Iowa, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to CWI:
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- About this route
- FSI Airport Information
- CWI Airport Information
- Facts about FSI
- Facts about CWI
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to CWI
- List of Nearest Airports to CWI
- Map of Furthest Airports from CWI
- List of Furthest Airports from CWI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Clinton Municipal Airport (CWI), Clinton, Iowa, United States would travel a Great Circle distance of 661 miles (or 1,064 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 Henry Post Army Airfield and Clinton Municipal Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CWI / KCWI |
Airport Name: | Clinton Municipal Airport |
Location: | Clinton, Iowa, United States |
GPS Coordinates: | 41°49'51"N by 90°19'45"W |
Area Served: | Clinton, Iowa |
Operator/Owner: | City of Clinton |
Airport Type: | Public |
Elevation: | 708 feet (216 meters) |
# of Runways: | 2 |
View all routes: | Routes from CWI |
More Information: | CWI Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- The closest airport to Henry Post Army Airfield (FSI) is Lawton–Fort Sill Regional Airport (LAW), which is located only 6 miles (9 kilometers) S of FSI.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- Post Field served as a base for flight training for the Air Service.
- The furthest airport from Henry Post Army Airfield (FSI) is Sir Gaëtan Duval Airport (RRG), which is located 10,920 miles (17,575 kilometers) away in Rodrigues Island, Mauritius.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
Facts about Clinton Municipal Airport (CWI):
- Clinton Municipal Airport (CWI) has 2 runways.
- The closest airport to Clinton Municipal Airport (CWI) is Davenport Municipal Airport (DVN), which is located 20 miles (33 kilometers) SW of CWI.
- Because of Clinton Municipal Airport's relatively low elevation of 708 feet, planes can take off or land at Clinton Municipal 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 Clinton Municipal Airport (CWI) is Margaret River Airport (MGV), which is located 10,953 miles (17,628 kilometers) away in Margaret River, Western Australia, Australia.