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

Arrival Airport:

Distance from ITO to FSI:
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- About this route
- ITO Airport Information
- FSI Airport Information
- Facts about ITO
- Facts about FSI
- Map of Nearest Airports to ITO
- List of Nearest Airports to ITO
- Map of Furthest Airports from ITO
- List of Furthest Airports from ITO
- 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 Hilo International Airport (ITO), Hilo, Hawaii, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 3,583 miles (or 5,766 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 Hilo International 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 Hilo International 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: | ITO / PHTO |
Airport Name: | Hilo International Airport |
Location: | Hilo, Hawaii, United States |
GPS Coordinates: | 19°43'13"N by 155°2'53"W |
Operator/Owner: | Hawaiʻi State Department of Transportation |
Airport Type: | Public |
Elevation: | 38 feet (12 meters) |
# of Runways: | 2 |
View all routes: | Routes from ITO |
More Information: | ITO 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 Hilo International Airport (ITO):
- Hilo International Airport handled 1,279,342 passengers last year.
- Improvements to Hilo's airfield were minimal during its first decade.
- The furthest airport from Hilo International Airport (ITO) is Maun Airport (MUB), which is nearly antipodal to Hilo International Airport (meaning Hilo International Airport is almost on the exact opposite side of the Earth from Maun Airport), and is located 12,336 miles (19,854 kilometers) away in Maun, Botswana.
- The closest airport to Hilo International Airport (ITO) is Pōhakuloa Training Area (BSF), which is located 44 miles (71 kilometers) W of ITO.
- Hilo International Airport (ITO) has 2 runways.
- Hilo International Airport, formerly General Lyman Field, is owned and operated by the Hawaiʻi state Department of Transportation.
- Because of Hilo International Airport's relatively low elevation of 38 feet, planes can take off or land at Hilo International 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 passenger terminal complex, including commuter facilities, is at the southern edge of Hilo International Airport and is served by an access roadway from Hawaii Belt Road at Kekūanaōʻa Avenue.
- Groundbreaking for a new terminal was held in July 1974.
- In 1973, for example, the total passenger count at Hilo International Airport was 1,357,818.
Facts about Henry Post Army Airfield (FSI):
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- 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.
- 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 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 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.