Nonstop flight route between Fort Sill, Oklahoma, United States and Hawi, Hawaii, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to UPP:
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- About this route
- FSI Airport Information
- UPP Airport Information
- Facts about FSI
- Facts about UPP
- 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 UPP
- List of Nearest Airports to UPP
- Map of Furthest Airports from UPP
- List of Furthest Airports from UPP
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Upolu Airport (UPP), Hawi, Hawaii, United States would travel a Great Circle distance of 3,611 miles (or 5,811 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 Upolu 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 Upolu 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: | UPP / PHUP |
Airport Name: | Upolu Airport |
Location: | Hawi, Hawaii, United States |
GPS Coordinates: | 20°15'55"N by 155°51'36"W |
Area Served: | Hawi, Hawaii |
Operator/Owner: | Hawaii Department of Transportation |
Airport Type: | Public |
Elevation: | 96 feet (29 meters) |
# of Runways: | 1 |
View all routes: | Routes from UPP |
More Information: | UPP Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
Facts about Upolu Airport (UPP):
- Upolu Airport (UPP) currently has only 1 runway.
- The closest airport to Upolu Airport (UPP) is Waimea-Kohala Airport (MUE), which is located 22 miles (36 kilometers) SE of UPP.
- As a general aviation airport, Upolu Airport has a single runway without taxiways and two aircraft parking areas south of the runway.
- The furthest airport from Upolu Airport (UPP) is Maun Airport (MUB), which is nearly antipodal to Upolu Airport (meaning Upolu Airport is almost on the exact opposite side of the Earth from Maun Airport), and is located 12,387 miles (19,934 kilometers) away in Maun, Botswana.
- Because of Upolu Airport's relatively low elevation of 96 feet, planes can take off or land at Upolu 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.