Nonstop flight route between Coimbra, Portugal and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Coimbra Airport (CBP), Coimbra, Portugal and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,729 miles (or 7,611 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 Coimbra 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 Coimbra 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 Coimbra Airport (CBP):

• The furthest airport from Coimbra Airport (CBP) is Takaka Aerodrome (KTF), which is nearly antipodal to Coimbra Airport (meaning Coimbra Airport is almost on the exact opposite side of the Earth from Takaka Aerodrome), and is located 12,352 miles (19,879 kilometers) away in Takaka, New Zealand.
• Because of Coimbra Airport's relatively low elevation of 571 feet, planes can take off or land at Coimbra 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.
• Coimbra Airport (CBP) currently has only 1 runway.
• In addition to being known as "Coimbra Airport", another name for CBP is "Aeródromo Municipal Bissaya Barreto".
• The closest airport to Coimbra Airport (CBP) is Covilhã Airport (COV), which is located 53 miles (85 kilometers) E of CBP.

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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
• 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.
• 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 Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.