Nonstop flight route between Fort Sill, Oklahoma, United States and Amook Bay, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to AOS:
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- About this route
- FSI Airport Information
- AOS Airport Information
- Facts about FSI
- Facts about AOS
- 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 AOS
- List of Nearest Airports to AOS
- Map of Furthest Airports from AOS
- List of Furthest Airports from AOS
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Amook Bay Seaplane Base (AOS), Amook Bay, Alaska, United States would travel a Great Circle distance of 2,976 miles (or 4,790 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 Amook Bay Seaplane Base, 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 Amook Bay Seaplane Base. 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: | AOS / |
Airport Names: |
|
Location: | Amook Bay, Alaska, United States |
GPS Coordinates: | 57°28'17"N by 153°48'55"W |
Area Served: | Amook Bay, Alaska |
Operator/Owner: | Mike Munsey |
Airport Type: | Private |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from AOS |
More Information: | AOS Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
Facts about Amook Bay Seaplane Base (AOS):
- The furthest airport from Amook Bay Seaplane Base (AOS) is Port Elizabeth International Airport (PLZ), which is located 10,814 miles (17,403 kilometers) away in Port Elizabeth, South Africa.
- Amook Bay Seaplane Base (AOS) currently has only 1 runway.
- Because of Amook Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Amook Bay Seaplane Base 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.
- The closest airport to Amook Bay Seaplane Base (AOS) is Zachar Bay Seaplane Base (KZB), which is located only 6 miles (10 kilometers) NNE of AOS.
- In addition to being known as "Amook Bay Seaplane Base", another name for AOS is "AK81".