Nonstop flight route between Fort Sill, Oklahoma, United States and Helsinki / Vantaa, Finland:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Helsinki Airport (HEL), Helsinki / Vantaa, Finland would travel a Great Circle distance of 5,136 miles (or 8,266 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 Helsinki 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 Helsinki 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):

• 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.
• 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.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• 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.
• 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 Helsinki Airport (HEL):

• Finnair's head office is located in Tietotie 11 on the grounds of Helsinki Airport.
• The furthest airport from Helsinki Airport (HEL) is Chatham Islands (CHT), which is located 10,992 miles (17,689 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• The airport is nominally divided into 2 terminals, located 250 metres apart and linked by an internal pedestrian connection both airside and landside.
• In addition to being known as "Helsinki Airport", another name for HEL is "Helsinki-Vantaan lentoasemaHelsingfors-Vanda flygplats".
• Helsinki Airport (HEL) has 3 runways.
• There are regular bus service 615 and 620 to the Helsinki Central railway station in 30–55 minutes, and major hotels and railway stations in the Greater Helsinki Area in 15–120 minutes.
• The closest airport to Helsinki Airport (HEL) is Helsinki-Malmi Airport (HEM), which is located only 5 miles (8 kilometers) SSE of HEL.
• Because of Helsinki Airport's relatively low elevation of 179 feet, planes can take off or land at Helsinki 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.
• Helsinki Airport handled 15,279,043 passengers last year.