Nonstop flight route between Fort Sill, Oklahoma, United States and Springfield, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to SPI:
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- About this route
- FSI Airport Information
- SPI Airport Information
- Facts about FSI
- Facts about SPI
- Map of Nearest Airports to FSI
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- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to SPI
- List of Nearest Airports to SPI
- Map of Furthest Airports from SPI
- List of Furthest Airports from SPI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Abraham Lincoln Capital Airport (SPI), Springfield, Illinois, United States would travel a Great Circle distance of 599 miles (or 964 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 relatively short distance between Henry Post Army Airfield and Abraham Lincoln Capital Airport, the route shown on this map most likely still appears to be a straight line.
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: | SPI / KSPI |
Airport Name: | Abraham Lincoln Capital Airport |
Location: | Springfield, Illinois, United States |
GPS Coordinates: | 39°50'39"N by 89°40'41"W |
Area Served: | Springfield, Illinois |
Operator/Owner: | Springfield Airport Authority |
Airport Type: | Public |
Elevation: | 598 feet (182 meters) |
# of Runways: | 3 |
View all routes: | Routes from SPI |
More Information: | SPI Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- 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.
Facts about Abraham Lincoln Capital Airport (SPI):
- Abraham Lincoln Capital Airport (SPI) has 3 runways.
- The furthest airport from Abraham Lincoln Capital Airport (SPI) is Margaret River Airport (MGV), which is located 11,013 miles (17,724 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Abraham Lincoln Capital Airport's relatively low elevation of 598 feet, planes can take off or land at Abraham Lincoln Capital 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.
- Abraham Lincoln Capital Airport is a civil-military public airport in Sangamon County, Illinois.
- The closest airport to Abraham Lincoln Capital Airport (SPI) is Decatur Airport (DEC), which is located 43 miles (69 kilometers) E of SPI.
- Allegiant Air is the only airline with mainline jets, McDonnell Douglas MD-80s.