Nonstop flight route between Kirksville, Missouri, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from IRK to FSI:
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- About this route
- IRK Airport Information
- FSI Airport Information
- Facts about IRK
- Facts about FSI
- Map of Nearest Airports to IRK
- List of Nearest Airports to IRK
- Map of Furthest Airports from IRK
- List of Furthest Airports from IRK
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Kirksville Regional Airport (IRK), Kirksville, Missouri, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 495 miles (or 796 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 Kirksville Regional Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | IRK / KIRK |
Airport Name: | Kirksville Regional Airport |
Location: | Kirksville, Missouri, United States |
GPS Coordinates: | 40°5'35"N by 92°32'42"W |
Area Served: | Kirksville, Missouri |
Operator/Owner: | City of Kirksville |
Airport Type: | Public |
Elevation: | 966 feet (294 meters) |
# of Runways: | 2 |
View all routes: | Routes from IRK |
More Information: | IRK Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Facts about Kirksville Regional Airport (IRK):
- The closest airport to Kirksville Regional Airport (IRK) is Trenton Municipal Airport (TRX), which is located 55 miles (89 kilometers) W of IRK.
- Aviation in the Kirksville area began in the Kirksville area within a few years of the Wright brothers historic flight.
- Kirksville Regional Airport (IRK) has 2 runways.
- The furthest airport from Kirksville Regional Airport (IRK) is Margaret River Airport (MGV), which is located 10,860 miles (17,478 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Kirksville Regional Airport's relatively low elevation of 966 feet, planes can take off or land at Kirksville Regional 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.
Facts about Henry Post Army Airfield (FSI):
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.