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

Arrival Airport:

Distance from FSI to HTF:
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- About this route
- FSI Airport Information
- HTF Airport Information
- Facts about FSI
- Facts about HTF
- 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 HTF
- List of Nearest Airports to HTF
- Map of Furthest Airports from HTF
- List of Furthest Airports from HTF
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Hatfield Aerodrome (HTF), Hatfield, Hertfordshire, England, United Kingdom would travel a Great Circle distance of 4,699 miles (or 7,563 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 Hatfield Aerodrome, 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 Hatfield Aerodrome. 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: | HTF / EGTH |
Airport Name: | Hatfield Aerodrome |
Location: | Hatfield, Hertfordshire, England, United Kingdom |
GPS Coordinates: | 51°45'56"N by 0°15'2"W |
Operator/Owner: | de Havilland Aircraft Company (1930 - 1960) Hawker Siddeley (1960 - 1977) British Aerospace (1977 - closure) |
Airport Type: | Private |
Elevation: | 254 feet (77 meters) |
# of Runways: | 2 |
View all routes: | Routes from HTF |
More Information: | HTF Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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 Army Airfield (FSI) currently has only 1 runway.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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 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.
- 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.
Facts about Hatfield Aerodrome (HTF):
- In 1934 significant works were undertaken at the site and a large factory and imposing Art Deco administration buildings were constructed together with a flying school building which also housed flying control.
- Hatfield Aerodrome (HTF) has 2 runways.
- In 1992, due to severe financial problems, British Aerospace announced the cessation of aircraft production at Hatfield from 1993.
- The de Havilland Aircraft Company was acquired by Hawker Siddeley in 1960 and the de Havilland name ceased to be used in 1963.
- Because of Hatfield Aerodrome's relatively low elevation of 254 feet, planes can take off or land at Hatfield Aerodrome 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.
- The closest airport to Hatfield Aerodrome (HTF) is London Luton Airport (LTN), which is located only 9 miles (15 kilometers) NNW of HTF.
- The furthest airport from Hatfield Aerodrome (HTF) is Chatham Islands (CHT), which is located 11,860 miles (19,086 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- The Hatfield Aerodrome History Trail was officially opened on 24 November 2010.