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

Arrival Airport:

Distance from FSI to PIA:
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- About this route
- FSI Airport Information
- PIA Airport Information
- Facts about FSI
- Facts about PIA
- 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 PIA
- List of Nearest Airports to PIA
- Map of Furthest Airports from PIA
- List of Furthest Airports from PIA
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and General Wayne A. Downing Peoria International Airport (PIA), Peoria, Illinois, United States would travel a Great Circle distance of 632 miles (or 1,016 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 General Wayne A. Downing Peoria International 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: | PIA / KPIA |
Airport Name: | General Wayne A. Downing Peoria International Airport |
Location: | Peoria, Illinois, United States |
GPS Coordinates: | 40°39'51"N by 89°41'35"W |
Area Served: | Peoria, Illinois |
Airport Type: | Public |
Elevation: | 661 feet (201 meters) |
# of Runways: | 2 |
View all routes: | Routes from PIA |
More Information: | PIA Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
Facts about General Wayne A. Downing Peoria International Airport (PIA):
- Peoria International Airport covers 3,800 acres at an elevation of 661 feet above mean sea level.
- On May 19, 1932 the citizens of Peoria voted to have an airport.
- The closest airport to General Wayne A. Downing Peoria International Airport (PIA) is Central Illinois Regional Airport at Bloomington-Normal (BMI), which is located 43 miles (69 kilometers) ESE of PIA.
- General Wayne A. Downing Peoria International Airport handled 592,101 passengers last year.
- General Wayne A. Downing Peoria International Airport (PIA) has 2 runways.
- The furthest airport from General Wayne A. Downing Peoria International Airport (PIA) is Margaret River Airport (MGV), which is located 11,003 miles (17,707 kilometers) away in Margaret River, Western Australia, Australia.
- Because of General Wayne A. Downing Peoria International Airport's relatively low elevation of 661 feet, planes can take off or land at General Wayne A. Downing Peoria 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.