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

Arrival Airport:

Distance from UPP to FSI:
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- About this route
- UPP Airport Information
- FSI Airport Information
- Facts about UPP
- Facts about 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
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Upolu Airport (UPP), Hawi, Hawaii, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, 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 Upolu Airport and Henry Post Army Airfield, 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 Upolu Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival 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 |
Facts about Upolu Airport (UPP):
- 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.
- 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.
- Upolu Airport is a regional airport of the State of Hawai'i in Hawai'i County.
- Upolu Airport (UPP) currently has only 1 runway.
- Upolu Airport is part of a centralized state structure governing all of the airports and seaports of Hawai'i.
- 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.
Facts about Henry Post Army Airfield (FSI):
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- 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.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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.