Nonstop flight route between Fort Sill, Oklahoma, United States and Antalaha, Madagascar:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Antsirabato Airport (ANM), Antalaha, Madagascar would travel a Great Circle distance of 10,068 miles (or 16,203 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 large distance between Henry Post Army Airfield and Antsirabato Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Antsirabato Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Henry Post Army Airfield (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.
• 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.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• 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 Army Airfield (FSI) currently has only 1 runway.
• 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.
• 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.

Facts about Antsirabato Airport (ANM):

• The furthest airport from Antsirabato Airport (ANM) is Guerrero Negro Airport (GUB), which is located 11,089 miles (17,847 kilometers) away in Guerrero Negro, Baja California Sur, Mexico.
• The closest airport to Antsirabato Airport (ANM) is Mandritsara Airport (WMA), which is located 114 miles (184 kilometers) WSW of ANM.
• Because of Antsirabato Airport's relatively low elevation of 0 feet, planes can take off or land at Antsirabato 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.