Nonstop flight route between Gladwin, Michigan, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from GDW to FSI:
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- About this route
- GDW Airport Information
- FSI Airport Information
- Facts about GDW
- Facts about FSI
- Map of Nearest Airports to GDW
- List of Nearest Airports to GDW
- Map of Furthest Airports from GDW
- List of Furthest Airports from GDW
- 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 Gladwin Zettel Memorial Airport (GDW), Gladwin, Michigan, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 982 miles (or 1,580 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 Gladwin Zettel Memorial 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: | GDW / KGDW |
Airport Name: | Gladwin Zettel Memorial Airport |
Location: | Gladwin, Michigan, United States |
GPS Coordinates: | 43°58'14"N by 84°28'29"W |
Area Served: | Gladwin, Michigan |
Operator/Owner: | City/County of Gladwin |
Airport Type: | Public |
Elevation: | 774 feet (236 meters) |
# of Runways: | 2 |
View all routes: | Routes from GDW |
More Information: | GDW 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 Gladwin Zettel Memorial Airport (GDW):
- Gladwin Zettel Memorial Airport (GDW) has 2 runways.
- Because of Gladwin Zettel Memorial Airport's relatively low elevation of 774 feet, planes can take off or land at Gladwin Zettel Memorial 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.
- For the 12-month period ending December 31, 2009, the airport had 4,454 general aviation aircraft operations, an average of 12 per day.
- The furthest airport from Gladwin Zettel Memorial Airport (GDW) is Margaret River Airport (MGV), which is located 11,182 miles (17,995 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Gladwin Zettel Memorial Airport (GDW) is Mount Pleasant Municipal Airport (MOP), which is located 27 miles (44 kilometers) SSW of GDW.
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.