Nonstop flight route between Fort Sill, Oklahoma, United States and Christmas Island, Australia:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Christmas Island Airport (XCH), Christmas Island, Australia would travel a Great Circle distance of 10,178 miles (or 16,381 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 Christmas Island 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 Christmas Island 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):

• After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
• 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.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.

Facts about Christmas Island Airport (XCH):

• The closest airport to Christmas Island Airport (XCH) is Cibeureum Airfield (TSY), which is located 276 miles (445 kilometers) NE of XCH.
• From the late 1940s, when the island was still a British colony administered by Singapore and the Straits Settlements Administration, it was serviced occasionally by Royal Air Force Short Sunderland flying boats before the construction of the airport.
• Christmas Island Airport (XCH) currently has only 1 runway.
• The furthest airport from Christmas Island Airport (XCH) is Ernesto Cortissoz International Airport (BAQ), which is nearly antipodal to Christmas Island Airport (meaning Christmas Island Airport is almost on the exact opposite side of the Earth from Ernesto Cortissoz International Airport), and is located 12,393 miles (19,944 kilometers) away in Barranquilla, Colombia.
• The airport resides at an elevation of 916 ft above sea level.
• Because of Christmas Island Airport's relatively low elevation of 916 feet, planes can take off or land at Christmas Island 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.
• Christmas Island Airport handled 27,286 passengers last year.