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):

• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• 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.
• 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.
• 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 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.

Facts about Altamira Airport (ATM):

• Altamira Airport handled 151,626 passengers last year.
• 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.
• The closest airport to Altamira Airport (ATM) is Serra do Areão Airport (MEU), which is located 165 miles (265 kilometers) N of ATM.
• In addition to being known as "Altamira Airport", another name for ATM is "Aeroporto de Altamira".
• Altamira Airport (ATM) currently has only 1 runway.
• The airport is located 7 km from downtown Altamira.