Nonstop flight route between Sullivan, Indiana, United States and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Sullivan County Airport (SIV), Sullivan, Indiana, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 679 miles (or 1,092 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 Sullivan County 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 Sullivan County Airport (SIV):

• The furthest airport from Sullivan County Airport (SIV) is Margaret River Airport (MGV), which is located 11,138 miles (17,926 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Sullivan County Airport (SIV) is Ed-Air Airport (OTN), which is located only 18 miles (30 kilometers) S of SIV.
• Sullivan County Airport (SIV) currently has only 1 runway.
• Because of Sullivan County Airport's relatively low elevation of 540 feet, planes can take off or land at Sullivan County 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.

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.
• 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.
• 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.
• 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 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.
• Henry Post Army Airfield (FSI) currently has only 1 runway.