Nonstop flight route between Twin Falls, Idaho, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from TWF to FSI:
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- About this route
- TWF Airport Information
- FSI Airport Information
- Facts about TWF
- Facts about FSI
- Map of Nearest Airports to TWF
- List of Nearest Airports to TWF
- Map of Furthest Airports from TWF
- List of Furthest Airports from TWF
- 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 Magic Valley Regional Airport (TWF), Twin Falls, Idaho, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,021 miles (or 1,643 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 relatively short distance between Magic Valley Regional Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | TWF / KTWF |
Airport Names: |
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Location: | Twin Falls, Idaho, United States |
GPS Coordinates: | 42°28'54"N by 114°29'16"W |
Area Served: | Twin Falls, Idaho |
Operator/Owner: | City & County of Twin Falls |
Airport Type: | Public |
Elevation: | 4154 feet (1,266 meters) |
# of Runways: | 2 |
View all routes: | Routes from TWF |
More Information: | TWF 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 Magic Valley Regional Airport (TWF):
- The furthest airport from Magic Valley Regional Airport (TWF) is Pierrefonds Airport (ZSE), which is located 10,862 miles (17,481 kilometers) away in Saint-Pierre, Réunion.
- The closest airport to Magic Valley Regional Airport (TWF) is Jackpot Airport (KPT), which is located 36 miles (58 kilometers) SSW of TWF.
- Because of Magic Valley Regional Airport's high elevation of 4,154 feet, planes must typically fly at a faster airspeed in order to takeoff or land at TWF. Combined with a high temperature, this could make TWF a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Magic Valley Regional Airport (TWF) has 2 runways.
- Magic Valley Regional Airport, also known as Joslin Field, is a public use airport located four nautical miles south of the central business district of Twin Falls, a city in Twin Falls County, Idaho, United States.
- In addition to being known as "Magic Valley Regional Airport", another name for TWF is "Joslin Field".
Facts about Henry Post Army Airfield (FSI):
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Post Field served as a base for flight training for the Air Service.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- 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.