Nonstop flight route between Fort Sill, Oklahoma, United States and Imperial, California, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to IPL:
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- About this route
- FSI Airport Information
- IPL Airport Information
- Facts about FSI
- Facts about IPL
- 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 IPL
- List of Nearest Airports to IPL
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- List of Furthest Airports from IPL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Imperial County Airport (IPL), Imperial, California, United States would travel a Great Circle distance of 994 miles (or 1,599 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 Imperial County 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: | IPL / KIPL |
Airport Names: |
|
Location: | Imperial, California, United States |
GPS Coordinates: | 32°50'3"N by 115°34'42"W |
Area Served: | Imperial / El Centro |
Operator/Owner: | Imperial County |
Airport Type: | Public |
Elevation: | -54 feet (-16 meters) |
# of Runways: | 2 |
View all routes: | Routes from IPL |
More Information: | IPL Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
Facts about Imperial County Airport (IPL):
- The airport is located one nautical mile south of the central business district of Imperial, California, partially in the City of Imperial and partially in an unincorporated area of Imperial County.
- Because of Imperial County Airport's relatively low elevation of -54 feet, planes can take off or land at Imperial County 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.
- Imperial County Airport (IPL) has 2 runways.
- In addition to being known as "Imperial County Airport", another name for IPL is "Boley Field".
- The closest airport to Imperial County Airport (IPL) is Naval Air Facility El Centro (NJK), which is located only 5 miles (9 kilometers) W of IPL.
- The furthest airport from Imperial County Airport (IPL) is Sir Gaëtan Duval Airport (RRG), which is located 11,531 miles (18,557 kilometers) away in Rodrigues Island, Mauritius.
- Imperial County Airport covers an area of 370 acres at an elevation of 54 feet below mean sea level.