Nonstop flight route between Fort Sill, Oklahoma, United States and Zonguldak, Turkey:
Departure Airport:

Arrival Airport:

Distance from FSI to ONQ:
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- About this route
- FSI Airport Information
- ONQ Airport Information
- Facts about FSI
- Facts about ONQ
- 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 ONQ
- List of Nearest Airports to ONQ
- Map of Furthest Airports from ONQ
- List of Furthest Airports from ONQ
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Zonguldak Airport (ONQ), Zonguldak, Turkey would travel a Great Circle distance of 6,310 miles (or 10,156 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 Zonguldak 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 Zonguldak 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: | ONQ / LTAS |
Airport Name: | Zonguldak Airport |
Location: | Zonguldak, Turkey |
GPS Coordinates: | 41°30'23"N by 32°5'18"E |
Area Served: | Zonguldak |
Operator/Owner: | Turkish State Airports Authority - DHMI |
# of Runways: | 1 |
View all routes: | Routes from ONQ |
More Information: | ONQ Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Post Field served as a base for flight training for the Air Service.
- 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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
Facts about Zonguldak Airport (ONQ):
- The closest airport to Zonguldak Airport (ONQ) is Kastamonu Airport (KFS), which is located 89 miles (144 kilometers) E of ONQ.
- Zonguldak Airport (ONQ) currently has only 1 runway.
- The furthest airport from Zonguldak Airport (ONQ) is Rurutu Airport (RUR), which is located 11,104 miles (17,870 kilometers) away in Rurutu, French Polynesia.