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

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Lisbon Portela Airport (LIS), Lisbon, Portugal would travel a Great Circle distance of 4,742 miles (or 7,632 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 Lisbon Portela 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 Lisbon Portela 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):

• Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• 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.
• 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 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.
• Post Field served as a base for flight training for the Air Service.
• 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.

Facts about Lisbon Portela Airport (LIS):

• Terminal 2 is used by 4 scheduled low-cost flight airlines for departures to European, North Atlantic islands and North African destinations, while Terminal 1 handles all arrivals and regular scheduled and chartered flights from most major European and North American air carriers.
• In addition to being known as "Lisbon Portela Airport", another name for LIS is "Aeroporto da Portela".
• Lisbon Portela Airport handled 16,024,955 passengers last year.
• The closest airport to Lisbon Portela Airport (LIS) is Beja Airport (BYJ), which is located 81 miles (130 kilometers) SE of LIS.
• The furthest airport from Lisbon Portela Airport (LIS) is New Plymouth Airport (NPL), which is nearly antipodal to Lisbon Portela Airport (meaning Lisbon Portela Airport is almost on the exact opposite side of the Earth from New Plymouth Airport), and is located 12,258 miles (19,727 kilometers) away in New Plymouth, New Zealand.
• Lisbon Portela Airport (LIS) has 2 runways.
• At the end of the war the airport developed quickly and by 1946 was used by major airlines like Air France, British European Airways, Iberia, KLM, Sabena, Pan Am and Trans World Airlines and by 1954 the number of passengers had reached 100,000.
• Lisbon Portela Airport, also known as Lisbon Airport, is an international airport located in the city of Lisbon, the capital of Portugal.
• The airport is the main hub of TAP Portugal and its subsidiary Portugália, a focus city for easyJet, Ryanair and SATA International and also the base for charter airlines euroAtlantic Airways, Hi Fly and White Airways.
• Lisbon airport has an underground Metro de Lisboa station at the Southern edge of the Terminal 1 arrivals area.
• Because of Lisbon Portela Airport's relatively low elevation of 374 feet, planes can take off or land at Lisbon Portela 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 airport is the main international gateway to Portugal and a major European hub.