Nonstop flight route between Fort Sill, Oklahoma, United States and Palacios, Texas, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to PSX:
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- About this route
- FSI Airport Information
- PSX Airport Information
- Facts about FSI
- Facts about PSX
- 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 PSX
- List of Nearest Airports to PSX
- Map of Furthest Airports from PSX
- List of Furthest Airports from PSX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Palacios Municipal Airport (PSX), Palacios, Texas, United States would travel a Great Circle distance of 428 miles (or 689 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 Palacios 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: | PSX / KPSX |
Airport Names: |
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Location: | Palacios, Texas, United States |
GPS Coordinates: | 28°43'38"N by 96°15'2"W |
Area Served: | Palacios, Texas |
Operator/Owner: | City of Palacios |
Airport Type: | Public |
Elevation: | 14 feet (4 meters) |
# of Runways: | 3 |
View all routes: | Routes from PSX |
More Information: | PSX Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- 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.
Facts about Palacios Municipal Airport (PSX):
- Because of Palacios Municipal Airport's relatively low elevation of 14 feet, planes can take off or land at Palacios 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.
- Palacios Municipal Airport (PSX) has 3 runways.
- In addition to being known as "Palacios Municipal Airport", another name for PSX is "(former Palacios Army Airfield)".
- The furthest airport from Palacios Municipal Airport (PSX) is Cocos (Keeling) Island Airport (CCK), which is located 11,017 miles (17,730 kilometers) away in Cocos Islands, Australia.
- Camp Palacios was originally established as a summer training camp for the 36th Infantry Division of the TX National Guard after the Palacios Campsite Association donated the land to the state in 1926.
- The closest airport to Palacios Municipal Airport (PSX) is Bay City Municipal Airport (BBC), which is located 29 miles (47 kilometers) NE of PSX.