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

Arrival Airport:

Distance from FSI to IRK:
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- About this route
- FSI Airport Information
- IRK Airport Information
- Facts about FSI
- Facts about 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
- Map of Nearest Airports to IRK
- List of Nearest Airports to IRK
- Map of Furthest Airports from IRK
- List of Furthest Airports from IRK
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Kirksville Regional Airport (IRK), Kirksville, Missouri, 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 Henry Post Army Airfield and Kirksville Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival 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 |
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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
Facts about Kirksville Regional Airport (IRK):
- 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.
- Cape Air is the current air service provider, with an average of 900 to 1,000 passengers per month.
- 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.
- Aviation in the Kirksville area began in the Kirksville area within a few years of the Wright brothers historic flight.
- The closest airport to Kirksville Regional Airport (IRK) is Trenton Municipal Airport (TRX), which is located 55 miles (89 kilometers) W of IRK.
- Kirksville Regional Airport (IRK) has 2 runways.