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

Arrival Airport:

Distance from FSI to FYU:
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- About this route
- FSI Airport Information
- FYU Airport Information
- Facts about FSI
- Facts about FYU
- 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 FYU
- List of Nearest Airports to FYU
- Map of Furthest Airports from FYU
- List of Furthest Airports from FYU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Fort Yukon Airport (FYU), Fort Yukon, Alaska, United States would travel a Great Circle distance of 2,889 miles (or 4,649 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 Fort Yukon 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 Fort Yukon 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: | FYU / PFYU |
Airport Name: | Fort Yukon Airport |
Location: | Fort Yukon, Alaska, United States |
GPS Coordinates: | 66°34'21"N by 145°14'47"W |
Area Served: | Fort Yukon, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Northern Region |
Airport Type: | Public |
Elevation: | 438 feet (134 meters) |
# of Runways: | 1 |
View all routes: | Routes from FYU |
More Information: | FYU 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.
- Post Field served as a base for flight training for the Air Service.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
Facts about Fort Yukon Airport (FYU):
- Fort Yukon Airport (FYU) currently has only 1 runway.
- The closest airport to Fort Yukon Airport (FYU) is Birch Creek Airport (KBC), which is located 26 miles (42 kilometers) SW of FYU.
- Because of Fort Yukon Airport's relatively low elevation of 438 feet, planes can take off or land at Fort Yukon 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 Fort Yukon Airport (FYU) is Port Elizabeth International Airport (PLZ), which is located 10,155 miles (16,342 kilometers) away in Port Elizabeth, South Africa.