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):

• Fort Severn Airport (YER) currently has only 1 runway.
• 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.
• The closest airport to Fort Severn Airport (YER) is Peawanuck Airport (YPO), which is located 113 miles (181 kilometers) SE of YER.
• 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.

Facts about Henry Post Army Airfield (FSI):

• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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.
• 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.
• Henry Post Army Airfield (FSI) currently has only 1 runway.