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):

• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• 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.
• 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.
• Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
• 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 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.
• 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):

• St. Gallen–Altenrhein Airport (ACH) has 2 runways.
• The paved, eastbound runway 10 is equipped with an Instrument landing system.
• 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.