Nonstop flight route between Fort Sill, Oklahoma, United States and Kirensk, Irkutsk Oblast, Russia:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Kirensk Airport (KCK), Kirensk, Irkutsk Oblast, Russia would travel a Great Circle distance of 5,869 miles (or 9,445 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 Kirensk 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 Kirensk 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 Army Airfield (FSI) currently has only 1 runway.
• 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.
• Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
• 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.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.

Facts about Kirensk Airport (KCK):

• Because of Kirensk Airport's relatively low elevation of 840 feet, planes can take off or land at Kirensk 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 Kirensk Airport (KCK) is Ust-Kut Airport (UKX), which is located 108 miles (173 kilometers) SW of KCK.
• Kirensk Airport (KCK) currently has only 1 runway.
• In addition to being known as "Kirensk Airport", another name for KCK is "Аэропорт Киренск".
• The furthest airport from Kirensk Airport (KCK) is Ushuaia International Airport (USH), which is nearly antipodal to Kirensk Airport (meaning Kirensk Airport is almost on the exact opposite side of the Earth from Ushuaia International Airport), and is located 12,191 miles (19,619 kilometers) away in Ushuaia, Tierra del Fuego, Argentina.