Nonstop flight route between Fort Sill, Oklahoma, United States and Ardabil, Iran:
Departure Airport:

Arrival Airport:

Distance from FSI to ADU:
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- About this route
- FSI Airport Information
- ADU Airport Information
- Facts about FSI
- Facts about ADU
- 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 ADU
- List of Nearest Airports to ADU
- Map of Furthest Airports from ADU
- List of Furthest Airports from ADU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Ardabil Airport (ADU), Ardabil, Iran would travel a Great Circle distance of 6,965 miles (or 11,210 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 large distance between Henry Post Army Airfield and Ardabil Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Ardabil Airport. You'll see that it will travel the same route of the red line on this map!
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: | ADU / OITL |
Airport Name: | Ardabil Airport |
Location: | Ardabil, Iran |
GPS Coordinates: | 38°19'32"N by 48°25'27"E |
Airport Type: | Public |
Elevation: | 4315 feet (1,315 meters) |
# of Runways: | 1 |
View all routes: | Routes from ADU |
More Information: | ADU Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- 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.
Facts about Ardabil Airport (ADU):
- The closest airport to Ardabil Airport (ADU) is Lankaran International Airport (LLK), which is located 36 miles (59 kilometers) NE of ADU.
- Because of Ardabil Airport's high elevation of 4,315 feet, planes must typically fly at a faster airspeed in order to takeoff or land at ADU. Combined with a high temperature, this could make ADU a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Ardabil Airport (ADU) currently has only 1 runway.
- The furthest airport from Ardabil Airport (ADU) is Totegegie Airport (GMR), which is located 11,366 miles (18,291 kilometers) away in Mangareva, Gambier Islands, French Polynesia.