Nonstop flight route between Fort Sill, Oklahoma, United States and Gary, Indiana (near Chicago), United States:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Gary/Chicago International Airport (GYY), Gary, Indiana (near Chicago), United States would travel a Great Circle distance of 766 miles (or 1,233 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 Gary/Chicago 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):

• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• 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.
• 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.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• Henry Post Army Airfield (FSI) currently has only 1 runway.

Facts about Gary/Chicago International Airport (GYY):

• On the afternoon of March 22, 2013, the FAA closed the airport's control tower, along with other airports in Illinois.
• Gary/Chicago International Airport (GYY) has 2 runways.
• The South Shore Line commuter rail train serves the Gary/Chicago International Airport.
• Federal funds were secured in January 2006 to move railroad tracks away from the northwest corner to allow extension of the main runway to 9,000 feet, as well as add gates to the existing passenger terminal building.
• Because of Gary/Chicago International Airport's relatively low elevation of 591 feet, planes can take off or land at Gary/Chicago International 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.
• The furthest airport from Gary/Chicago International Airport (GYY) is Margaret River Airport (MGV), which is located 11,103 miles (17,868 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Gary/Chicago International Airport (GYY) is Chicago Midway International Airport (MDW), which is located 21 miles (34 kilometers) NW of GYY.
• On December 12, 2011 Allegiant Air announced they would begin service to Orlando Sanford International Airport two days a week beginning February 15, 2012.
• The airport is also home to an Army Aviation Support Facility supporting UH-60 Blackhawk helicopter operations of the Illinois Army National Guard as well as an additional collocated Army National Guard Armory supporting additional Illinois ARNG units and personnel.