Nonstop flight route between Fort Sill, Oklahoma, United States and Farmington, New Mexico, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to FMN:
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- About this route
- FSI Airport Information
- FMN Airport Information
- Facts about FSI
- Facts about FMN
- 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 FMN
- List of Nearest Airports to FMN
- Map of Furthest Airports from FMN
- List of Furthest Airports from FMN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Four Corners Regional Airport (FMN), Farmington, New Mexico, United States would travel a Great Circle distance of 570 miles (or 917 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 Four Corners 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: | FMN / KFMN |
Airport Name: | Four Corners Regional Airport |
Location: | Farmington, New Mexico, United States |
GPS Coordinates: | 36°44'27"N by 108°13'48"W |
Operator/Owner: | City of Farmington |
Airport Type: | Public |
Elevation: | 5506 feet (1,678 meters) |
# of Runways: | 2 |
View all routes: | Routes from FMN |
More Information: | FMN Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- 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.
Facts about Four Corners Regional Airport (FMN):
- The airport has free long term parking, four major car rental companies at the terminal, and free WiFi in the terminal area.
- The closest airport to Four Corners Regional Airport (FMN) is Animas Air Park (AMK), which is located 38 miles (61 kilometers) NNE of FMN.
- Because of Four Corners Regional Airport's high elevation of 5,506 feet, planes must typically fly at a faster airspeed in order to takeoff or land at FMN. Combined with a high temperature, this could make FMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Four Corners Regional Airport (FMN) is Sir Gaëtan Duval Airport (RRG), which is located 11,158 miles (17,957 kilometers) away in Rodrigues Island, Mauritius.
- Four Corners Regional Airport was served by the original Frontier Airlines, Sunwest Airlines, Air Midwest, Aspen Airways, Trans Colorado Airlines, America West Express, Continental Express, United Express, American Eagle, and USAirways Express.
- Four Corners Regional Airport (FMN) has 2 runways.