Nonstop flight route between Fort Sill, Oklahoma, United States and Utopia Creek, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to UTO:
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- About this route
- FSI Airport Information
- UTO Airport Information
- Facts about FSI
- Facts about UTO
- 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 UTO
- List of Nearest Airports to UTO
- Map of Furthest Airports from UTO
- List of Furthest Airports from UTO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Indian Mountain LRRS Airport (UTO), Utopia Creek, Alaska, United States would travel a Great Circle distance of 3,094 miles (or 4,979 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 Indian Mountain LRRS 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 Indian Mountain LRRS 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: | UTO / PAIM |
Airport Name: | Indian Mountain LRRS Airport |
Location: | Utopia Creek, Alaska, United States |
GPS Coordinates: | 65°59'34"N by 153°42'14"W |
Operator/Owner: | U.S. Air Force |
Airport Type: | Military |
Elevation: | 1273 feet (388 meters) |
# of Runways: | 1 |
View all routes: | Routes from UTO |
More Information: | UTO Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- 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.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
Facts about Indian Mountain LRRS Airport (UTO):
- It is not staffed by any support personnel, and is not open to the public.
- The furthest airport from Indian Mountain LRRS Airport (UTO) is Port Elizabeth International Airport (PLZ), which is located 10,225 miles (16,456 kilometers) away in Port Elizabeth, South Africa.
- The closest airport to Indian Mountain LRRS Airport (UTO) is Hughes Airport (HUS), which is located only 16 miles (26 kilometers) WNW of UTO.
- Indian Mountain LRRS Airport (UTO) currently has only 1 runway.