Nonstop flight route between Fort Sill, Oklahoma, United States and Barreirinhas, Maranhão, Brazil:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Barreirinhas Airport (BRB), Barreirinhas, Maranhão, Brazil would travel a Great Circle distance of 4,428 miles (or 7,127 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 Barreirinhas 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 Barreirinhas 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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.
• Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• 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.
• 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.
• 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.
• 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.

Facts about Barreirinhas Airport (BRB):

• The closest airport to Barreirinhas Airport (BRB) is Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB), which is located 75 miles (120 kilometers) E of BRB.
• In addition to being known as "Barreirinhas Airport", another name for BRB is "Aeroporto de Barreirinhas".
• Barreirinhas Airport is the airport serving Barreirinhas, Brazil.
• The furthest airport from Barreirinhas Airport (BRB) is Frans Kaisiepo Airport (BIK), which is nearly antipodal to Barreirinhas Airport (meaning Barreirinhas Airport is almost on the exact opposite side of the Earth from Frans Kaisiepo Airport), and is located 12,154 miles (19,560 kilometers) away in Biak, Indonesia.
• The airport is located 1 km from downtown Barreirinhas.
• Barreirinhas Airport (BRB) currently has only 1 runway.
• Because of Barreirinhas Airport's relatively low elevation of 66 feet, planes can take off or land at Barreirinhas 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.