Nonstop flight route between Fort Sill, Oklahoma, United States and Platinum, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to PTU:
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- About this route
- FSI Airport Information
- PTU Airport Information
- Facts about FSI
- Facts about PTU
- 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 PTU
- List of Nearest Airports to PTU
- Map of Furthest Airports from PTU
- List of Furthest Airports from PTU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Platinum Airport (PTU), Platinum, Alaska, United States would travel a Great Circle distance of 3,275 miles (or 5,270 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 Platinum 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 Platinum 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: | PTU / PAPM |
Airport Name: | Platinum Airport |
Location: | Platinum, Alaska, United States |
GPS Coordinates: | 59°0'41"N by 161°49'9"W |
Area Served: | Platinum, Alaska |
Operator/Owner: | Alaska DOT&PF - Central Region |
Airport Type: | Public |
Elevation: | 18 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from PTU |
More Information: | PTU 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.
- 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.
- 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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
- 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 Platinum Airport (PTU):
- Platinum Airport (PTU) currently has only 1 runway.
- The closest airport to Platinum Airport (PTU) is Goodnews Airport (GNU), which is located only 11 miles (18 kilometers) NE of PTU.
- Because of Platinum Airport's relatively low elevation of 18 feet, planes can take off or land at Platinum 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 furthest airport from Platinum Airport (PTU) is Cape Town International Airport (CPT), which is located 10,706 miles (17,230 kilometers) away in Cape Town, South Africa.