Nonstop flight route between Fort Sill, Oklahoma, United States and Iliamna, Alaska, United States:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Iliamna Airport (ILI), Iliamna, Alaska, United States would travel a Great Circle distance of 3,037 miles (or 4,888 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 Iliamna 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 Iliamna 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• 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.
• Post Field served as a base for flight training for the Air Service.
• 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.
• 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.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• 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.

Facts about Iliamna Airport (ILI):

• Iliamna Airport (ILI) has 4 runways.
• The closest airport to Iliamna Airport (ILI) is Nondalton Airport (NNL), which is located only 16 miles (25 kilometers) N of ILI.
• Because of Iliamna Airport's relatively low elevation of 192 feet, planes can take off or land at Iliamna 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.
• The furthest airport from Iliamna Airport (ILI) is Port Elizabeth International Airport (PLZ), which is located 10,656 miles (17,149 kilometers) away in Port Elizabeth, South Africa.