Nonstop flight route between Fort Sill, Oklahoma, United States and Altamira, Pará, Brazil:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Altamira Airport (ATM), Altamira, Pará, Brazil would travel a Great Circle distance of 3,975 miles (or 6,398 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 Altamira 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 Altamira 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):

• Air Service/Corps units assigned to Post Field between 1919 and 1941
• 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.
• 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.
• Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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 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.
• Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.

Facts about Altamira Airport (ATM):

• Altamira Airport handled 151,626 passengers last year.
• The airport is located 7 km from downtown Altamira.
• Because of Altamira Airport's relatively low elevation of 368 feet, planes can take off or land at Altamira 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 Altamira Airport (ATM) is Melangguane Airport (MNA), which is nearly antipodal to Altamira Airport (meaning Altamira Airport is almost on the exact opposite side of the Earth from Melangguane Airport), and is located 12,346 miles (19,869 kilometers) away in Melangguane, North Sulawesi, Indonesia.
• Altamira Airport (ATM) currently has only 1 runway.
• In addition to being known as "Altamira Airport", another name for ATM is "Aeroporto de Altamira".
• The closest airport to Altamira Airport (ATM) is Serra do Areão Airport (MEU), which is located 165 miles (265 kilometers) N of ATM.