Nonstop flight route between Fort Sill, Oklahoma, United States and Milford Sound, New Zealand:
Departure Airport:

Arrival Airport:

Distance from FSI to MFN:
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- About this route
- FSI Airport Information
- MFN Airport Information
- Facts about FSI
- Facts about MFN
- 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 MFN
- List of Nearest Airports to MFN
- Map of Furthest Airports from MFN
- List of Furthest Airports from MFN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Milford Sound Airport (MFN), Milford Sound, New Zealand would travel a Great Circle distance of 8,010 miles (or 12,890 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 Milford Sound 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 Milford Sound 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: | MFN / NZMF |
Airport Name: | Milford Sound Airport |
Location: | Milford Sound, New Zealand |
GPS Coordinates: | 44°40'23"S by 167°55'23"E |
Area Served: | Milford Sound |
Operator/Owner: | Ministry of Transport |
Airport Type: | Public |
Elevation: | 10 feet (3 meters) |
# of Runways: | 1 |
View all routes: | Routes from MFN |
More Information: | MFN Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
Facts about Milford Sound Airport (MFN):
- The closest airport to Milford Sound Airport (MFN) is Queenstown Airport (ZQN), which is located 47 miles (75 kilometers) ESE of MFN.
- 3Glenorchy Air, Milford
- The furthest airport from Milford Sound Airport (MFN) is A Coruña Airport (LCG), which is nearly antipodal to Milford Sound Airport (meaning Milford Sound Airport is almost on the exact opposite side of the Earth from A Coruña Airport), and is located 12,230 miles (19,682 kilometers) away in A Coruña, Spain.
- Milford Sound Airport (MFN) currently has only 1 runway.
- Because of Milford Sound Airport's relatively low elevation of 10 feet, planes can take off or land at Milford Sound 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.
- Prior to the ability of air operations, Milford Sound had no access in the winter months as the roads became impassable.