Nonstop flight route between Middleton Island, Alaska, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from MDO to FSI:
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- About this route
- MDO Airport Information
- FSI Airport Information
- Facts about MDO
- Facts about FSI
- Map of Nearest Airports to MDO
- List of Nearest Airports to MDO
- Map of Furthest Airports from MDO
- List of Furthest Airports from MDO
- 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 Middleton Island Airport (MDO), Middleton Island, Alaska, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 2,740 miles (or 4,409 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 Middleton Island Airport and Henry Post Army Airfield, 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 Middleton Island Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | MDO / PAMD |
Airport Name: | Middleton Island Airport |
Location: | Middleton Island, Alaska, United States |
GPS Coordinates: | 59°26'58"N by 146°18'25"W |
Area Served: | Middleton Island, Alaska |
Airport Type: | Public |
Elevation: | 100 feet (30 meters) |
# of Runways: | 2 |
View all routes: | Routes from MDO |
More Information: | MDO 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 Middleton Island Airport (MDO):
- The closest airport to Middleton Island Airport (MDO) is Boswell Bay Airport (BSW), which is located 67 miles (109 kilometers) N of MDO.
- The furthest airport from Middleton Island Airport (MDO) is Port Elizabeth International Airport (PLZ), which is located 10,639 miles (17,122 kilometers) away in Port Elizabeth, South Africa.
- Middleton Island Airport (MDO) has 2 runways.
- Because of Middleton Island Airport's relatively low elevation of 100 feet, planes can take off or land at Middleton Island 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.
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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.