Nonstop flight route between Fort Sill, Oklahoma, United States and Bunbury, Western Australia, Australia:
Departure Airport:

Arrival Airport:

Distance from FSI to BUY:
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- About this route
- FSI Airport Information
- BUY Airport Information
- Facts about FSI
- Facts about BUY
- 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 BUY
- List of Nearest Airports to BUY
- Map of Furthest Airports from BUY
- List of Furthest Airports from BUY
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Bunbury Airport (BUY), Bunbury, Western Australia, Australia would travel a Great Circle distance of 10,492 miles (or 16,886 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 Bunbury 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 Bunbury 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: | BUY / YBUN |
Airport Names: |
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Location: | Bunbury, Western Australia, Australia |
GPS Coordinates: | 33°22'41"S by 115°40'36"E |
Operator/Owner: | Bunbury City Council |
Airport Type: | Public |
Elevation: | 53 feet (16 meters) |
# of Runways: | 1 |
View all routes: | Routes from BUY |
More Information: | BUY 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.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
Facts about Bunbury Airport (BUY):
- Because of Bunbury Airport's relatively low elevation of 53 feet, planes can take off or land at Bunbury 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.
- Bunbury Airport (BUY) currently has only 1 runway.
- The City of Bunbury is the owner and operator of Bunbury Airport.
- The closest airport to Bunbury Airport (BUY) is Busselton Regional Airport (BQB), which is located 27 miles (43 kilometers) SW of BUY.
- The furthest airport from Bunbury Airport (BUY) is L.F. Wade International Airport (BDA), which is nearly antipodal to Bunbury Airport (meaning Bunbury Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,364 miles (19,898 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
- In addition to being known as "Bunbury Airport", another name for BUY is "Bunbury City Airport".
- In 2009, the airport received funding through the Western Australian Government's Regional Airports Development Scheme to extend the parallel taxiway by 700 m so arriving aircraft would no longer be required to turn around and taxi on the active runway to reach the apron area.