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

Arrival Airport:

Distance from FSI to MMM:
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- About this route
- FSI Airport Information
- MMM Airport Information
- Facts about FSI
- Facts about MMM
- 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 MMM
- List of Nearest Airports to MMM
- Map of Furthest Airports from MMM
- List of Furthest Airports from MMM
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Middlemount Airport (MMM), Middlemount, Queensland, Australia would travel a Great Circle distance of 8,362 miles (or 13,457 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 Middlemount 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 Middlemount 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: | MMM / YMMU |
Airport Name: | Middlemount Airport |
Location: | Middlemount, Queensland, Australia |
GPS Coordinates: | 22°48'11"S by 148°42'18"E |
Operator/Owner: | Anglo Coal (Capcoal Management) Pty Ltd |
Airport Type: | Private |
Elevation: | 547 feet (167 meters) |
# of Runways: | 1 |
View all routes: | Routes from MMM |
More Information: | MMM Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- 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 Middlemount Airport (MMM):
- The furthest airport from Middlemount Airport (MMM) is Agostinho Neto Airport (NTO), which is located 11,878 miles (19,116 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- The closest airport to Middlemount Airport (MMM) is Dysart Airport (DYA), which is located 25 miles (40 kilometers) WNW of MMM.
- Because of Middlemount Airport's relatively low elevation of 547 feet, planes can take off or land at Middlemount 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.
- Middlemount Airport (MMM) currently has only 1 runway.