Nonstop flight route between Spokane, Washington, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from GEG to FSI:
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- About this route
- GEG Airport Information
- FSI Airport Information
- Facts about GEG
- Facts about FSI
- Map of Nearest Airports to GEG
- List of Nearest Airports to GEG
- Map of Furthest Airports from GEG
- List of Furthest Airports from GEG
- 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 Spokane International Airport (GEG), Spokane, Washington, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,333 miles (or 2,145 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 Spokane International Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | GEG / KGEG |
Airport Names: |
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Location: | Spokane, Washington, United States |
GPS Coordinates: | 47°37'11"N by 117°32'2"W |
Area Served: | Spokane Airport Board |
Operator/Owner: | Spokane County-City |
Airport Type: | Public |
Elevation: | 2376 feet (724 meters) |
# of Runways: | 2 |
View all routes: | Routes from GEG |
More Information: | GEG 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 Spokane International Airport (GEG):
- Spokane International Airport provides 24 gates on 3 concourses.
- Known as Sunset Field before 1941, it was purchased from the county by the War Department and renamed Geiger Field after Major Harold Geiger, an Army aviation pioneer who died in a crash in 1927.
- The closest airport to Spokane International Airport (GEG) is Fairchild Air Force Base (SKA), which is located only 6 miles (9 kilometers) W of GEG.
- Occasional non-stop flights to southern California since the 1970s have been among the first to be suspended during economic downturns.
- In addition to being known as "Spokane International Airport", another name for GEG is "Geiger Army Airfield".
- The furthest airport from Spokane International Airport (GEG) is Tôlanaro Airport (FTU), which is located 10,661 miles (17,158 kilometers) away in Tôlanaro, Madagascar.
- Spokane International Airport (GEG) has 2 runways.
- Geiger was closed in late 1945 and turned over to War Assets Administration, then transferred to Spokane County and developed into a commercial airport.
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.