Nonstop flight route between Fort Sill, Oklahoma, United States and Inishmaan, Ireland:
Departure Airport:

Arrival Airport:

Distance from FSI to IIA:
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- About this route
- FSI Airport Information
- IIA Airport Information
- Facts about FSI
- Facts about IIA
- 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 IIA
- List of Nearest Airports to IIA
- Map of Furthest Airports from IIA
- List of Furthest Airports from IIA
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Inishmaan Aerodrome (IIA), Inishmaan, Ireland would travel a Great Circle distance of 4,305 miles (or 6,929 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 Inishmaan Aerodrome, 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 Inishmaan Aerodrome. 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: | IIA / EIMN |
Airport Names: |
|
Location: | Inishmaan, Ireland |
GPS Coordinates: | 53°5'30"N by 9°34'12"W |
Area Served: | Inishmaan, Aran Islands, County Galway, Ireland |
Operator/Owner: | Comharchumann Inis Meáin |
Airport Type: | Private |
Elevation: | 13 feet (4 meters) |
# of Runways: | 2 |
View all routes: | Routes from IIA |
More Information: | IIA 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.
- 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.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Post Field served as a base for flight training for the Air Service.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
Facts about Inishmaan Aerodrome (IIA):
- The furthest airport from Inishmaan Aerodrome (IIA) is Ryan's Creek Aerodrome (SZS), which is located 11,997 miles (19,307 kilometers) away in Stewart Island, New Zealand.
- Because of Inishmaan Aerodrome's relatively low elevation of 13 feet, planes can take off or land at Inishmaan Aerodrome 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.
- Inishmaan Aerodrome (IIA) has 2 runways.
- The closest airport to Inishmaan Aerodrome (IIA) is Inisheer Aerodrome (INQ), which is located only 3 miles (5 kilometers) SE of IIA.
- In addition to being known as "Inishmaan Aerodrome", another name for IIA is "Inishmaan Airport".