Nonstop flight route between Fort Sill, Oklahoma, United States and Ust-Ilimsk, Irkutsk Oblast, Russia:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Ust-Ilimsk (UIK), Ust-Ilimsk, Irkutsk Oblast, Russia would travel a Great Circle distance of 5,912 miles (or 9,515 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 Ust-Ilimsk, 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 Ust-Ilimsk. 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):

• 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 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 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.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• Henry Post Army Airfield (FSI) currently has only 1 runway.

Facts about Ust-Ilimsk (UIK):

• Ust-Ilimsk (UIK) currently has only 1 runway.
• The closest airport to Ust-Ilimsk (UIK) is Bratsk Airport (BTK), which is located 126 miles (203 kilometers) SSW of UIK.
• The furthest airport from Ust-Ilimsk (UIK) is Ushuaia International Airport (USH), which is nearly antipodal to Ust-Ilimsk (meaning Ust-Ilimsk is almost on the exact opposite side of the Earth from Ushuaia International Airport), and is located 12,021 miles (19,346 kilometers) away in Ushuaia, Tierra del Fuego, Argentina.