Nonstop flight route between Fort Sill, Oklahoma, United States and Zamboanga City, Philippines:
Departure Airport:

Arrival Airport:

Distance from FSI to ZAM:
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- About this route
- FSI Airport Information
- ZAM Airport Information
- Facts about FSI
- Facts about ZAM
- 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 ZAM
- List of Nearest Airports to ZAM
- Map of Furthest Airports from ZAM
- List of Furthest Airports from ZAM
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Zamboanga International Airport (ZAM), Zamboanga City, Philippines would travel a Great Circle distance of 8,537 miles (or 13,739 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 Zamboanga International Airport, 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 Zamboanga International Airport. 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: | ZAM / RPMZ |
Airport Names: |
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Location: | Zamboanga City, Philippines |
GPS Coordinates: | 6°55'21"N by 122°3'34"E |
Area Served: | Zamboanga City |
Operator/Owner: | Civil Aviation Authority of the Philippines |
Airport Type: | Military/Public |
Elevation: | 20 feet (6 meters) |
# of Runways: | 1 |
View all routes: | Routes from ZAM |
More Information: | ZAM Maps & Info |
Facts about Henry Post Army Airfield (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.
- 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.
- 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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
Facts about Zamboanga International Airport (ZAM):
- The airport started off as Moret Field, an American airfield that was constructed from a rather poor Japanese airfield just north of Zamboanga.
- The national government through the DOTC, alloted 15 million pesos for the feasibility study of the project.
- The furthest airport from Zamboanga International Airport (ZAM) is Itaituba Airport (ITB), which is nearly antipodal to Zamboanga International Airport (meaning Zamboanga International Airport is almost on the exact opposite side of the Earth from Itaituba Airport), and is located 12,209 miles (19,648 kilometers) away in Itaituba, Pará, Brazil.
- December 21, 2007 - The Philippine Department of Transportation and Communications has allotted some P257 million for the improvement of Zamboanga Airport in Zamboanga City.
- Because of Zamboanga International Airport's relatively low elevation of 20 feet, planes can take off or land at Zamboanga 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.
- The closest airport to Zamboanga International Airport (ZAM) is Ipil Airport (IPE), which is located 70 miles (113 kilometers) NNE of ZAM.
- In addition to being known as "Zamboanga International Airport", another name for ZAM is "Paliparang Pandaigdig ng ZamboangaAeropuerto Internacional de Zamboanga".
- The runway is presently being shared between the airport and the Edwin Andrews Air Base.
- Zamboanga International Airport (ZAM) currently has only 1 runway.
- Zamboanga International Airport handled 904,668 passengers last year.