Nonstop flight route between Fort Sill, Oklahoma, United States and Jeju province, South Korea:
Departure Airport:

Arrival Airport:

Distance from FSI to JDG:
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- About this route
- FSI Airport Information
- JDG Airport Information
- Facts about FSI
- Facts about JDG
- 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 JDG
- List of Nearest Airports to JDG
- Map of Furthest Airports from JDG
- List of Furthest Airports from JDG
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Jeongseok / Jungseok Airport (JDG), Jeju province, South Korea would travel a Great Circle distance of 6,902 miles (or 11,107 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 Jeongseok / Jungseok 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 Jeongseok / Jungseok 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: | JDG / RKPD |
Airport Name: | Jeongseok / Jungseok Airport |
Location: | Jeju province, South Korea |
GPS Coordinates: | 33°23'48"N by 126°42'46"E |
Area Served: | Jeju |
Airport Type: | Public |
Elevation: | 1171 feet (357 meters) |
# of Runways: | 1 |
View all routes: | Routes from JDG |
More Information: | JDG 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.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
Facts about Jeongseok / Jungseok Airport (JDG):
- Jeongseok / Jungseok Airport (JDG) currently has only 1 runway.
- The closest airport to Jeongseok / Jungseok Airport (JDG) is Jeju International Airport (CJU), which is located only 15 miles (24 kilometers) WNW of JDG.
- The furthest airport from Jeongseok / Jungseok Airport (JDG) is Treinta y Tres Airport (TYT), which is nearly antipodal to Jeongseok / Jungseok Airport (meaning Jeongseok / Jungseok Airport is almost on the exact opposite side of the Earth from Treinta y Tres Airport), and is located 12,374 miles (19,914 kilometers) away in Treinta y Tres, Treinta y Tres, Uruguay.