Nonstop flight route between Fort Sill, Oklahoma, United States and Château-Thierry, France:
Departure Airport:

Arrival Airport:

Distance from FSI to XCY:
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- About this route
- FSI Airport Information
- XCY Airport Information
- Facts about FSI
- Facts about XCY
- 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 XCY
- List of Nearest Airports to XCY
- Map of Furthest Airports from XCY
- List of Furthest Airports from XCY
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Château-Thierry - Belleau Aerodrome (XCY), Château-Thierry, France would travel a Great Circle distance of 4,930 miles (or 7,934 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 Château-Thierry - Belleau 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 Château-Thierry - Belleau 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: | XCY / LFFH |
Airport Names: |
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Location: | Château-Thierry, France |
GPS Coordinates: | 49°4'0"N by 3°21'20"E |
Area Served: | Château-Thierry, France |
Operator/Owner: | Club aéronautique de Château Thierry |
Airport Type: | Public |
Elevation: | 723 feet (220 meters) |
# of Runways: | 1 |
View all routes: | Routes from XCY |
More Information: | XCY 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.
- 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.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- 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.
- 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 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
Facts about Château-Thierry - Belleau Aerodrome (XCY):
- The furthest airport from Château-Thierry - Belleau Aerodrome (XCY) is Chatham Islands (CHT), which is nearly antipodal to Château-Thierry - Belleau Aerodrome (meaning Château-Thierry - Belleau Aerodrome is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,073 miles (19,430 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- In addition to being known as "Château-Thierry - Belleau Aerodrome", another name for XCY is "Aérodrome de Château-Thierry - Belleau".
- Château-Thierry - Belleau Aerodrome (XCY) currently has only 1 runway.
- The closest airport to Château-Thierry - Belleau Aerodrome (XCY) is Reims-Champagne Air Base (RHE), which is located 36 miles (57 kilometers) ENE of XCY.
- Because of Château-Thierry - Belleau Aerodrome's relatively low elevation of 723 feet, planes can take off or land at Château-Thierry - Belleau 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.