Nonstop flight route between Fort Sill, Oklahoma, United States and Brookings, South Dakota, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to BKX:
Share this route:
Jump to:
- About this route
- FSI Airport Information
- BKX Airport Information
- Facts about FSI
- Facts about BKX
- 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 BKX
- List of Nearest Airports to BKX
- Map of Furthest Airports from BKX
- List of Furthest Airports from BKX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Brookings Regional Airport (BKX), Brookings, South Dakota, United States would travel a Great Circle distance of 672 miles (or 1,082 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 Brookings Regional 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: | BKX / KBKX |
Airport Name: | Brookings Regional Airport |
Location: | Brookings, South Dakota, United States |
GPS Coordinates: | 44°18'16"N by 96°49'0"W |
Area Served: | Brookings, South Dakota |
Operator/Owner: | City of Brookings |
Airport Type: | Public |
Elevation: | 1648 feet (502 meters) |
# of Runways: | 2 |
View all routes: | Routes from BKX |
More Information: | BKX 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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 Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- 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 Brookings Regional Airport (BKX):
- Brookings Regional Airport (BKX) has 2 runways.
- The City is in the final engineering phases for a $19 million reconstruction project, including realigning and lengthening the runways.
- The furthest airport from Brookings Regional Airport (BKX) is Margaret River Airport (MGV), which is located 10,597 miles (17,053 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Brookings Regional Airport (BKX) is Madison Municipal Airport (XMD), which is located 24 miles (39 kilometers) SW of BKX.