Nonstop flight route between Fort Sill, Oklahoma, United States and Blackwater, Queensland, Australia:
Departure Airport:

Arrival Airport:

Distance from FSI to BLT:
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- About this route
- FSI Airport Information
- BLT Airport Information
- Facts about FSI
- Facts about BLT
- 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 BLT
- List of Nearest Airports to BLT
- Map of Furthest Airports from BLT
- List of Furthest Airports from BLT
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Blackwater Airport (BLT), Blackwater, Queensland, Australia would travel a Great Circle distance of 8,382 miles (or 13,489 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 large distance between Henry Post Army Airfield and Blackwater Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Blackwater Airport. You'll see that it will travel the same route of the red line on this map!
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: | BLT / YBTR |
Airport Name: | Blackwater Airport |
Location: | Blackwater, Queensland, Australia |
GPS Coordinates: | 23°36'11"S by 148°48'24"E |
Operator/Owner: | BHP Billiton Mitsubishi Alliance |
Airport Type: | Public |
Elevation: | 657 feet (200 meters) |
# of Runways: | 1 |
View all routes: | Routes from BLT |
More Information: | BLT 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.
- 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.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
Facts about Blackwater Airport (BLT):
- Because of Blackwater Airport's relatively low elevation of 657 feet, planes can take off or land at Blackwater 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 Blackwater Airport (BLT) is Emerald Airport (EMD), which is located 40 miles (64 kilometers) W of BLT.
- Blackwater Airport (BLT) currently has only 1 runway.
- The furthest airport from Blackwater Airport (BLT) is Agostinho Neto Airport (NTO), which is located 11,844 miles (19,061 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.