Nonstop flight route between Fort Sill, Oklahoma, United States and Ylivieska, Finland:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Ylivieska Airfield (YLI), Ylivieska, Finland would travel a Great Circle distance of 4,952 miles (or 7,969 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 Ylivieska 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 Henry Post Army Airfield and Ylivieska 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 Henry Post Army Airfield (FSI):

• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• 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 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.
• 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 (FSI) currently has only 1 runway.

Facts about Ylivieska Airfield (YLI):

• Because of Ylivieska Airfield's relatively low elevation of 252 feet, planes can take off or land at Ylivieska Airfield 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.
• In addition to being known as "Ylivieska Airfield", another name for YLI is "Ylivieskan lentokenttä".
• Ylivieska Airfield (YLI) currently has only 1 runway.
• The closest airport to Ylivieska Airfield (YLI) is Kokkola-Pietarsaari Airport (KOK), which is located 53 miles (86 kilometers) WSW of YLI.
• The furthest airport from Ylivieska Airfield (YLI) is Chatham Islands (CHT), which is located 10,811 miles (17,399 kilometers) away in Waitangi, Chatham Islands, New Zealand.