Nonstop flight route between Fort Sill, Oklahoma, United States and Shannon (County Clare), Ireland:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Shannon Airport (SNN), Shannon (County Clare), Ireland would travel a Great Circle distance of 4,340 miles (or 6,985 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 Shannon 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 Shannon 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.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• The Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
• 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.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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 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 Shannon Airport (SNN):

• Because of Shannon Airport's relatively low elevation of 46 feet, planes can take off or land at Shannon 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.
• Shannon Airport (SNN) currently has only 1 runway.
• Shannon began to rebound in the late 1990s with the success of the Irish economy, the improving situation in Northern Ireland, and an influx of American tourists.
• The closest airport to Shannon Airport (SNN) is Inisheer Aerodrome (INQ), which is located 35 miles (56 kilometers) NW of SNN.
• In 1947, the "Customs Free Airport Act" established Shannon as the world's first duty-free airport.
• Shannon Airport handled 1,400,032 passengers last year.
• In 2011, passenger numbers at Shannon declined by 7.4% from 1,755,885, to 1,625,549.
• Shannon Airport is one of Ireland's three primary airports, along with Dublin and Cork.
• The furthest airport from Shannon Airport (SNN) is Ryan's Creek Aerodrome (SZS), which is nearly antipodal to Shannon Airport (meaning Shannon Airport is almost on the exact opposite side of the Earth from Ryan's Creek Aerodrome), and is located 12,015 miles (19,336 kilometers) away in Stewart Island, New Zealand.
• In addition to being known as "Shannon Airport", another name for SNN is "Aerfort na Sionainne".