Nonstop flight route between Fort Sill, Oklahoma, United States and Grimsby, England, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from FSI to GSY:
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- About this route
- FSI Airport Information
- GSY Airport Information
- Facts about FSI
- Facts about GSY
- 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 GSY
- List of Nearest Airports to GSY
- Map of Furthest Airports from GSY
- List of Furthest Airports from GSY
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and RAF Binbrook (GSY), Grimsby, England, United Kingdom would travel a Great Circle distance of 4,646 miles (or 7,477 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 large distance between Henry Post Army Airfield and RAF Binbrook, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and RAF Binbrook. You'll see that it will travel the same route of the red line on this map!
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: | GSY / EGXB |
Airport Name: | RAF Binbrook |
Location: | Grimsby, England, United Kingdom |
GPS Coordinates: | 53°26'44"N by 0°12'32"W |
Operator/Owner: | Ministry of Defence |
Airport Type: | Military |
# of Runways: | 3 |
View all routes: | Routes from GSY |
More Information: | GSY Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
- 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 RAF Binbrook (GSY):
- RAF Binbrook (GSY) has 3 runways.
- The closest airport to RAF Binbrook (GSY) is Humberside Airport (HUY), which is located only 11 miles (17 kilometers) NNW of GSY.
- The Control Tower and adjacent Fire Section were demolished in 1995.
- The furthest airport from RAF Binbrook (GSY) is Dunedin International Airport (DUD), which is located 11,764 miles (18,933 kilometers) away in Dunedin, Otago, New Zealand.
- After the departure of IX and 12 squadrons in 1959, Binbrook housed Gloster Javelin all-weather fighters belonging to 64 squadron, as well as the Central Fighter Establishment.