Nonstop flight route between Fort Sill, Oklahoma, United States and Sanya, Hainan, China:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Sanya Phoenix International Airport (SYX), Sanya, Hainan, China would travel a Great Circle distance of 8,347 miles (or 13,434 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 Sanya Phoenix International 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 Sanya Phoenix International 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):

• 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.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• 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.
• 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.
• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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 (FSI) currently has only 1 runway.
• 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.

Facts about Sanya Phoenix International Airport (SYX):

• Sanya Phoenix International Airport (SYX) currently has only 1 runway.
• The closest airport to Sanya Phoenix International Airport (SYX) is Haikou Meilan International Airport (HAK), which is located 132 miles (212 kilometers) NNE of SYX.
• Sanya Phoenix Airport Railway Station of the Hainan Western Ring High-Speed Railway, which is planned to be opened by the end of 2014, will be located just north of the airport.
• Sanya Phoenix International Airport is an airport serving the city of Sanya in Hainan, the southernmost province of China.
• In addition to being known as "Sanya Phoenix International Airport", other names for SYX include "三亚凤凰国际机场" and "Sānyà Fènghuáng Guójì Jīcháng".
• The furthest airport from Sanya Phoenix International Airport (SYX) is Chacalluta International Airport (ARI), which is nearly antipodal to Sanya Phoenix International Airport (meaning Sanya Phoenix International Airport is almost on the exact opposite side of the Earth from Chacalluta International Airport), and is located 12,420 miles (19,988 kilometers) away in Arica, Chile.