Nonstop flight route between Fort Sill, Oklahoma, United States and Great Falls, Montana, United States:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Great Falls International Airport (GTF), Great Falls, Montana, United States would travel a Great Circle distance of 1,112 miles (or 1,789 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 Henry Post Army Airfield and Great Falls International Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Henry Post Army Airfield (FSI):

• 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.
• 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.
• 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.
• 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.
• 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.

Facts about Great Falls International Airport (GTF):

• In 1975 the terminal was replaced and all runways, aprons, and taxiways updated.
• Great Falls International Airport (GTF) has 3 runways.
• Great Falls has had airline flights since the 1930s.
• The closest airport to Great Falls International Airport (GTF) is Malmstrom Air Force Base (GFA), which is located only 9 miles (14 kilometers) E of GTF.
• The furthest airport from Great Falls International Airport (GTF) is Sir Gaëtan Duval Airport (RRG), which is located 10,498 miles (16,896 kilometers) away in Rodrigues Island, Mauritius.
• In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".