Nonstop flight route between Fort Sill, Oklahoma, United States and Siuna, Nicaragua:
Departure Airport:

Arrival Airport:

Distance from FSI to SIU:
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- About this route
- FSI Airport Information
- SIU Airport Information
- Facts about FSI
- Facts about SIU
- 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 SIU
- List of Nearest Airports to SIU
- Map of Furthest Airports from SIU
- List of Furthest Airports from SIU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Siuna Airport (SIU), Siuna, Nicaragua would travel a Great Circle distance of 1,678 miles (or 2,700 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 Siuna 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: | SIU / MNSI |
Airport Name: | Siuna Airport |
Location: | Siuna, Nicaragua |
GPS Coordinates: | 13°43'0"N by 84°46'36"W |
Operator/Owner: | Republica de Nicaragua |
Airport Type: | Public |
Elevation: | 480 feet (146 meters) |
# of Runways: | 1 |
View all routes: | Routes from SIU |
More Information: | SIU Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Post Field served as a base for flight training for the Air Service.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- 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 Siuna Airport (SIU):
- Because of Siuna Airport's relatively low elevation of 480 feet, planes can take off or land at Siuna 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.
- The closest airport to Siuna Airport (SIU) is Bonanza Airport (BZA), which is located 25 miles (39 kilometers) NNE of SIU.
- The furthest airport from Siuna Airport (SIU) is Cocos (Keeling) Island Airport (CCK), which is nearly antipodal to Siuna Airport (meaning Siuna Airport is almost on the exact opposite side of the Earth from Cocos (Keeling) Island Airport), and is located 12,286 miles (19,772 kilometers) away in Cocos Islands, Australia.
- Siuna Airport (SIU) currently has only 1 runway.