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

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Illinois Valley Regional Airport (VYS), Peru, Illinois, United States would travel a Great Circle distance of 683 miles (or 1,100 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 Illinois Valley Regional 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 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.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• 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 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.
• 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.
• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.

Facts about Illinois Valley Regional Airport (VYS):

• In addition to being known as "Illinois Valley Regional Airport", another name for VYS is "Walter A. Duncan Field".
• Illinois Valley Regional Airport (VYS) has 2 runways.
• The furthest airport from Illinois Valley Regional Airport (VYS) is Margaret River Airport (MGV), which is located 11,020 miles (17,735 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Illinois Valley Regional Airport (VYS) is Chicago/Aurora Municipal Airport (AUZ), which is located 45 miles (73 kilometers) NE of VYS.
• Because of Illinois Valley Regional Airport's relatively low elevation of 654 feet, planes can take off or land at Illinois Valley Regional 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.