Nonstop flight route between Decatur, Illinois, United States and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Decatur Airport (DEC), Decatur, Illinois, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 635 miles (or 1,021 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 Decatur 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 Decatur Airport (DEC):

• The Illinois Army National Guard has an Army Aviation Support Facility at the airport.
• Because of Decatur Airport's relatively low elevation of 682 feet, planes can take off or land at Decatur Airport 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.
• Decatur Airport (DEC) has 3 runways.
• Decatur Airport has a 24,000 square feet passenger terminal with airline counters, a restaurant, baggage claim area and car rental facility.
• The closest airport to Decatur Airport (DEC) is University of Illinois Willard Airport (CMI), which is located 34 miles (55 kilometers) ENE of DEC.
• The furthest airport from Decatur Airport (DEC) is Margaret River Airport (MGV), which is located 11,056 miles (17,793 kilometers) away in Margaret River, Western Australia, Australia.

Facts about Henry Post Army Airfield (FSI):

• Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
• The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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 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.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• 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.