Nonstop flight route between Porto Santo, Madeira, Portugal and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Porto Santo Airport (PXO), Porto Santo, Madeira, Portugal and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,565 miles (or 7,347 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 Porto Santo Airport and Henry Post Army Airfield, 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 Porto Santo Airport and Henry Post Army Airfield. 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 Porto Santo Airport (PXO):

• Because of Porto Santo Airport's relatively low elevation of 338 feet, planes can take off or land at Porto Santo 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 closest airport to Porto Santo Airport (PXO) is Madeira Airport (FNC), which is located 36 miles (58 kilometers) SW of PXO.
• In addition to being known as "Porto Santo Airport", another name for PXO is "Aeroporto de Porto Santo".
• Porto Santo Airport handled 106,592 passengers last year.
• The airport's infrastructure has improved over time, with increases to the runway length and in ramp surface.
• The furthest airport from Porto Santo Airport (PXO) is Lord Howe Island Airport (LDH), which is nearly antipodal to Porto Santo Airport (meaning Porto Santo Airport is almost on the exact opposite side of the Earth from Lord Howe Island Airport), and is located 12,150 miles (19,553 kilometers) away in Lord Howe Island, New South Wales, Australia.
• In 1959, its runway was built with an initial length of 2,000 m.
• Porto Santo Airport (PXO) currently has only 1 runway.
• The island of Porto Santo was the first of the Madeira Islands to obtain an airport.

Facts about Henry Post Army Airfield (FSI):

• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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.
• 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.
• 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.
• Henry Post Army Airfield (FSI) currently has only 1 runway.