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

Arrival Airport:

Distance from FSI to RFD:
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- About this route
- FSI Airport Information
- RFD Airport Information
- Facts about FSI
- Facts about RFD
- 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 RFD
- List of Nearest Airports to RFD
- Map of Furthest Airports from RFD
- List of Furthest Airports from RFD
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Chicago Rockford International Airport (RFD), Rockford, Illinois, United States would travel a Great Circle distance of 724 miles (or 1,165 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 Chicago Rockford 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: | RFD / KRFD |
Airport Name: | Chicago Rockford International Airport |
Location: | Rockford, Illinois, United States |
GPS Coordinates: | 42°11'43"N by 89°5'49"W |
Area Served: | Rockford, Illinois |
Operator/Owner: | Greater Rockford Airport Authority |
Airport Type: | Public |
Elevation: | 742 feet (226 meters) |
# of Runways: | 2 |
View all routes: | Routes from RFD |
More Information: | RFD 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.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
Facts about Chicago Rockford International Airport (RFD):
- The historic Bell Bowl, a natural amphitheater on the south side of the airport, was the venue for the 16th Wing Ding concert on May 24, 2009.
- The closest airport to Chicago Rockford International Airport (RFD) is Southern Wisconsin Regional Airport (JVL), which is located 30 miles (47 kilometers) N of RFD.
- Several airlines have previously served the airport including United Express, Hooters Air, Frontier, Midwest Connect, Midway Connection, Trans Meridian, American Eagle, TWA, Ozark, McClain, Direct Air, Northwest Airlink, etc.
- RFD has two cargo aprons in use.
- Because of Chicago Rockford International Airport's relatively low elevation of 742 feet, planes can take off or land at Chicago Rockford 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 furthest airport from Chicago Rockford International Airport (RFD) is Margaret River Airport (MGV), which is located 11,008 miles (17,716 kilometers) away in Margaret River, Western Australia, Australia.
- Chicago Rockford International Airport (RFD) has 2 runways.
- The larger north cargo apron is next to the main terminal.