Nonstop flight route between Fort Sill, Oklahoma, United States and Yan'an, Shaanxi, China:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Yan'an Airport (ENY), Yan'an, Shaanxi, China would travel a Great Circle distance of 7,193 miles (or 11,577 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 Yan'an 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 Yan'an 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):

• Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
• 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.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• 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.

Facts about Yan'an Airport (ENY):

• In addition to being known as "Yan'an Airport", other names for ENY include "延安二十里堡机场" and "Yán'ān Èrshílǐpù Jīchǎng".
• The closest airport to Yan'an Airport (ENY) is Lüliang Airport (LLV), which is located 113 miles (183 kilometers) NE of ENY.
• The furthest airport from Yan'an Airport (ENY) is Chos Malal Airport (HOS), which is nearly antipodal to Yan'an Airport (meaning Yan'an Airport is almost on the exact opposite side of the Earth from Chos Malal Airport), and is located 12,380 miles (19,923 kilometers) away in Chos Malal, Neuquén, Argentina.