Nonstop flight route between Fort Sill, Oklahoma, United States and Obo, Papua New Guinea, Papua New Guinea:
Departure Airport:

Arrival Airport:

Distance from FSI to OBX:
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- About this route
- FSI Airport Information
- OBX Airport Information
- Facts about FSI
- Facts about OBX
- 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 OBX
- List of Nearest Airports to OBX
- Map of Furthest Airports from OBX
- List of Furthest Airports from OBX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Obo Airport (OBX), Obo, Papua New Guinea, Papua New Guinea would travel a Great Circle distance of 8,228 miles (or 13,242 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 Obo 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 Obo 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: | OBX / |
Airport Names: |
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Location: | Obo, Papua New Guinea, Papua New Guinea |
GPS Coordinates: | 7°35'25"S by 141°19'27"E |
View all routes: | Routes from OBX |
More Information: | OBX Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Post Field served as a base for flight training for the Air Service.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
Facts about Obo Airport (OBX):
- The furthest airport from Obo Airport (OBX) is Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB), which is located 11,682 miles (18,801 kilometers) away in Parnaiba, Piaui, Brazil.
- In addition to being known as "Obo Airport", another name for OBX is "AYOB".
- The closest airport to Obo Airport (OBX) is Aiambak Airport (AIH), which is located only 18 miles (28 kilometers) NNW of OBX.