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

About this route:

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

Departure Airport Information:

Arrival Airport Information:

Facts about Great Falls International Airport (GTF):

• In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
• Great Falls International Airport (GTF) has 3 runways.
• Great Falls International Airport is a public/military airport in city limits three miles southwest of central Great Falls in Cascade County, Montana.
• 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.
• Great Falls International Airport is home to Great Falls Air National Guard Base and the Montana Air National Guard's 120th Fighter Wing, the "Vigilantes." An Air National Guard unit operationally-gained by the Air Combat Command, the 120 FW transitioned from the F-16C Fighting Falcon to the F-15C Eagle in January 2009, which it employs in the air defense and air dominance missions.
• Great Falls has had airline flights since the 1930s.

Facts about Henry Post Army Airfield (FSI):

• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• 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.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• 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.
• 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.