Nonstop flight route between Fort Sill, Oklahoma, United States and O'Neill, Nebraska, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to ONL:
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- About this route
- FSI Airport Information
- ONL Airport Information
- Facts about FSI
- Facts about ONL
- 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 ONL
- List of Nearest Airports to ONL
- Map of Furthest Airports from ONL
- List of Furthest Airports from ONL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and O'Neill Municipal Airport (ONL), O'Neill, Nebraska, United States would travel a Great Circle distance of 541 miles (or 870 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 O'Neill 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: | ONL / KONL |
Airport Names: |
|
Location: | O'Neill, Nebraska, United States |
GPS Coordinates: | 42°28'9"N by 98°41'13"W |
Area Served: | O'Neill, Nebraska |
Operator/Owner: | O'Neill Airport Authority |
Airport Type: | Public |
Elevation: | 2031 feet (619 meters) |
# of Runways: | 1 |
View all routes: | Routes from ONL |
More Information: | ONL Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Post Field served as a base for flight training for the Air Service.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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 is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
Facts about O'Neill Municipal Airport (ONL):
- The closest airport to O'Neill Municipal Airport (ONL) is Ainsworth Regional Airport (ANW), which is located 67 miles (108 kilometers) W of ONL.
- In addition to being known as "O'Neill Municipal Airport", another name for ONL is "John L. Baker Field".
- The furthest airport from O'Neill Municipal Airport (ONL) is Sir Gaëtan Duval Airport (RRG), which is located 10,551 miles (16,980 kilometers) away in Rodrigues Island, Mauritius.
- O'Neill Municipal Airport (ONL) currently has only 1 runway.