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

Arrival Airport:

Distance from FSI to ISA:
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- About this route
- FSI Airport Information
- ISA Airport Information
- Facts about FSI
- Facts about ISA
- 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 ISA
- List of Nearest Airports to ISA
- Map of Furthest Airports from ISA
- List of Furthest Airports from ISA
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Mount Isa Airport (ISA), Mount Isa, Queensland, Australia would travel a Great Circle distance of 8,814 miles (or 14,185 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 Mount Isa 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 Mount Isa 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: | ISA / YBMA |
Airport Name: | Mount Isa Airport |
Location: | Mount Isa, Queensland, Australia |
GPS Coordinates: | 20°39'50"S by 139°29'18"E |
Area Served: | Mount Isa, Queensland, Australia |
Operator/Owner: | Mount Isa Airport Pty Ltd |
Airport Type: | Public |
Elevation: | 1121 feet (342 meters) |
# of Runways: | 1 |
View all routes: | Routes from ISA |
More Information: | ISA Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Post Field served as a base for flight training for the Air Service.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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 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 Mount Isa Airport (ISA):
- Mount Isa Airport is an airport serving the western Queensland city of Mount Isa, Australia.
- The closest airport to Mount Isa Airport (ISA) is Cloncurry Airport (CNJ), which is located 66 miles (106 kilometers) E of ISA.
- On 22 September 1966 a Vickers Viscount aircraft departed from Mount Isa Airport with twenty passengers for a flight to Brisbane via Longreach.
- The furthest airport from Mount Isa Airport (ISA) is Agostinho Neto Airport (NTO), which is located 11,402 miles (18,349 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- Mount Isa Airport (ISA) currently has only 1 runway.
- Mount Isa Airport was ranked 30th in Australia for the number of revenue passengers served in financial year 2010-2011.