Nonstop flight route between Fort Sill, Oklahoma, United States and Guantánamo, Cuba:
Departure Airport:

Arrival Airport:

Distance from FSI to GAO:
Share this route:
Jump to:
- About this route
- FSI Airport Information
- GAO Airport Information
- Facts about FSI
- Facts about GAO
- 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 GAO
- List of Nearest Airports to GAO
- Map of Furthest Airports from GAO
- List of Furthest Airports from GAO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Mariana Grajales Airport (GAO), Guantánamo, Cuba would travel a Great Circle distance of 1,738 miles (or 2,797 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 Mariana Grajales 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: | GAO / MUGT |
Airport Name: | Mariana Grajales Airport |
Location: | Guantánamo, Cuba |
GPS Coordinates: | 20°5'7"N by 75°9'29"W |
Area Served: | Guantánamo, Cuba |
Airport Type: | Public |
Elevation: | 56 feet (17 meters) |
# of Runways: | 1 |
View all routes: | Routes from GAO |
More Information: | GAO Maps & Info |
Facts about Henry Post Army Airfield (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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- 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.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
Facts about Mariana Grajales Airport (GAO):
- The closest airport to Mariana Grajales Airport (GAO) is United States Naval Station Guantanamo Bay (NBW), which is located only 13 miles (21 kilometers) S of GAO.
- The furthest airport from Mariana Grajales Airport (GAO) is RAAF Learmonth (LEA), which is located 11,823 miles (19,027 kilometers) away in Exmouth, Western Australia, Australia.
- Because of Mariana Grajales Airport's relatively low elevation of 56 feet, planes can take off or land at Mariana Grajales 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.
- Mariana Grajales Airport (GAO) currently has only 1 runway.