Nonstop flight route between Grand Forks, North Dakota, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from GFK to FSI:
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- About this route
- GFK Airport Information
- FSI Airport Information
- Facts about GFK
- Facts about FSI
- Map of Nearest Airports to GFK
- List of Nearest Airports to GFK
- Map of Furthest Airports from GFK
- List of Furthest Airports from GFK
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
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- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Grand Forks International Airport (GFK), Grand Forks, North Dakota, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 921 miles (or 1,482 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 Grand Forks International 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: | GFK / KGFK |
Airport Name: | Grand Forks International Airport |
Location: | Grand Forks, North Dakota, United States |
GPS Coordinates: | 47°56'57"N by 97°10'33"W |
Operator/Owner: | Grand Forks Regional Airport Authority |
Airport Type: | Public |
Elevation: | 845 feet (258 meters) |
# of Runways: | 4 |
View all routes: | Routes from GFK |
More Information: | GFK 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 Grand Forks International Airport (GFK):
- The furthest airport from Grand Forks International Airport (GFK) is Margaret River Airport (MGV), which is located 10,514 miles (16,921 kilometers) away in Margaret River, Western Australia, Australia.
- One option was to keep the terminal as is.
- Due to the increased amount of general aviation traffic, primarily from the UND Aerospace flight training school, a fourth runway has been completed on the southeast side of the airport.
- In 2009 the airport's FAA control tower was the 23rd busiest in the nation, with 346,165 tower operations.
- Because of Grand Forks International Airport's relatively low elevation of 845 feet, planes can take off or land at Grand Forks International 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.
- In the mid-2000s, discussion began of upgrading or totally replacing the terminal as it has structural and safety problems and leaves little to no room for expansion.
- The closest airport to Grand Forks International Airport (GFK) is Grand Forks Air Force Base (RDR), which is located only 10 miles (17 kilometers) W of GFK.
- Grand Forks International Airport (GFK) has 4 runways.
- FedEx is the second largest employer at KGFK.
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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- 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.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Henry Post Army Airfield (FSI) currently has only 1 runway.