Nonstop flight route between Fort Sill, Oklahoma, United States and Altenrhein, Switzerland:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and St. Gallen–Altenrhein Airport (ACH), Altenrhein, Switzerland would travel a Great Circle distance of 5,228 miles (or 8,413 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 St. Gallen–Altenrhein 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 St. Gallen–Altenrhein 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):

• 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 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.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
• 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.
• After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
• 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.

Facts about St. Gallen–Altenrhein Airport (ACH):

• The furthest airport from St. Gallen–Altenrhein Airport (ACH) is Chatham Islands (CHT), which is nearly antipodal to St. Gallen–Altenrhein Airport (meaning St. Gallen–Altenrhein Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,051 miles (19,394 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• In addition to being known as "St. Gallen–Altenrhein Airport", another name for ACH is "People's Business Airport".
• The closest airport to St. Gallen–Altenrhein Airport (ACH) is Hohenems-Dornbirn Airport (HOH), which is located only 10 miles (15 kilometers) SE of ACH.
• The airport features a small passenger terminal building and some apron and hangar stands for aircraft such as the Embraer 170, business jets or general aviation planes such as the Cessna 172.
• St. Gallen–Altenrhein Airport (ACH) has 2 runways.