Nonstop flight route between Guernsey, Channel Islands, United Kingdom and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from GCI to FSI:
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- About this route
- GCI Airport Information
- FSI Airport Information
- Facts about GCI
- Facts about FSI
- Map of Nearest Airports to GCI
- List of Nearest Airports to GCI
- Map of Furthest Airports from GCI
- List of Furthest Airports from GCI
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Guernsey Airport (GCI), Guernsey, Channel Islands, United Kingdom and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,684 miles (or 7,539 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 Guernsey Airport and Henry Post Army Airfield, 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 Guernsey Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | GCI / EGJB |
Airport Name: | Guernsey Airport |
Location: | Guernsey, Channel Islands, United Kingdom |
GPS Coordinates: | 49°26'4"N by 2°36'6"W |
Area Served: | Guernsey |
Operator/Owner: | States of Guernsey |
Airport Type: | Public |
Elevation: | 336 feet (102 meters) |
# of Runways: | 1 |
View all routes: | Routes from GCI |
More Information: | GCI 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 Guernsey Airport (GCI):
- Guernsey Airport (GCI) currently has only 1 runway.
- The furthest airport from Guernsey Airport (GCI) is Dunedin International Airport (DUD), which is nearly antipodal to Guernsey Airport (meaning Guernsey Airport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,024 miles (19,350 kilometers) away in Dunedin, Otago, New Zealand.
- Because of Guernsey Airport's relatively low elevation of 336 feet, planes can take off or land at Guernsey 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.
- The closest airport to Guernsey Airport (GCI) is Jersey Airport (JER), which is located 24 miles (39 kilometers) SE of GCI.
- The airport currently runs two liaison groups.
- Guernsey Airport handled 886,396 passengers last year.
- On 7 December 1997 an F-27 operated by AirUK arriving from Southampton overshot the runway while landing in high cross winds.
- The proposal is to add runway safety areas, RESAs, extend the take-off section by 120 m, and displace the landing section to the west, the first of a two phase runway extension.
- Flybe are unable to operate their Embraer 195 aircraft into Guernsey due to the low strength of the runway, and elected to operate the smaller de Havilland Dash 8s.
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- 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.
- 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.