Nonstop flight route between Hamilton, Ohio, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from HAO to FSI:
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- About this route
- HAO Airport Information
- FSI Airport Information
- Facts about HAO
- Facts about FSI
- Map of Nearest Airports to HAO
- List of Nearest Airports to HAO
- Map of Furthest Airports from HAO
- List of Furthest Airports from HAO
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Butler County Regional Airport (HAO), Hamilton, Ohio, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 831 miles (or 1,337 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 Butler County Regional Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | HAO / KHAO |
Airport Names: |
|
Location: | Hamilton, Ohio, United States |
GPS Coordinates: | 39°21'49"N by 84°31'18"W |
Area Served: | Hamilton, Ohio |
Operator/Owner: | Butler County Board of Commissioners |
Airport Type: | Public |
Elevation: | 633 feet (193 meters) |
# of Runways: | 1 |
View all routes: | Routes from HAO |
More Information: | HAO Maps & Info |
Arrival 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 |
Facts about Butler County Regional Airport (HAO):
- In addition to being known as "Butler County Regional Airport", another name for HAO is "Hogan Field".
- Because of Butler County Regional Airport's relatively low elevation of 633 feet, planes can take off or land at Butler County Regional 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.
- Butler County Regional Airport (HAO) currently has only 1 runway.
- The closest airport to Butler County Regional Airport (HAO) is Middletown Regional Airport (MWO), which is located only 13 miles (22 kilometers) NNE of HAO.
- The furthest airport from Butler County Regional Airport (HAO) is Margaret River Airport (MGV), which is located 11,289 miles (18,168 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Henry Post Army Airfield (FSI):
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- The Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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.