Nonstop flight route between Fort Severn, Ontario, Canada and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Fort Severn Airport (YER), Fort Severn, Ontario, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,561 miles (or 2,513 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 relatively short distance between Fort Severn Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Fort Severn Airport (YER):

• Because of Fort Severn Airport's relatively low elevation of 52 feet, planes can take off or land at Fort Severn 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.
• Fort Severn Airport (YER) currently has only 1 runway.
• The furthest airport from Fort Severn Airport (YER) is Margaret River Airport (MGV), which is located 10,566 miles (17,005 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Fort Severn Airport (YER) is Peawanuck Airport (YPO), which is located 113 miles (181 kilometers) SE of YER.

Facts about Henry Post Army Airfield (FSI):

• 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.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• 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.
• 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.
• 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.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• 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.
• Post Field served as a base for flight training for the Air Service.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.