Nonstop flight route between Fort Sill, Oklahoma, United States and Montserrat, British Overseas Territories, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from FSI to MNI:
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- About this route
- FSI Airport Information
- MNI Airport Information
- Facts about FSI
- Facts about MNI
- 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 MNI
- List of Nearest Airports to MNI
- Map of Furthest Airports from MNI
- List of Furthest Airports from MNI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and John A. Osborne Airport (MNI), Montserrat, British Overseas Territories, United Kingdom would travel a Great Circle distance of 2,549 miles (or 4,103 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 John A. Osborne 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 John A. Osborne 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: | MNI / TRPG |
Airport Name: | John A. Osborne Airport |
Location: | Montserrat, British Overseas Territories, United Kingdom |
GPS Coordinates: | 16°47'29"N by 62°11'35"W |
Airport Type: | Public |
Elevation: | 550 feet (168 meters) |
# of Runways: | 1 |
View all routes: | Routes from MNI |
More Information: | MNI 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.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
Facts about John A. Osborne Airport (MNI):
- The closest airport to John A. Osborne Airport (MNI) is V. C. Bird International Airport (ANU), which is located 36 miles (57 kilometers) NE of MNI.
- Gerald's passenger terminal was dedicated in February 2005 by Anne, Princess Royal and the facility was formally opened on 11 July 2005.
- The airline FlyMontserrat has its headquarters on the airport property.
- John A. Osborne Airport (MNI) currently has only 1 runway.
- The furthest airport from John A. Osborne Airport (MNI) is Port Hedland International Airport (PHE), which is nearly antipodal to John A. Osborne Airport (meaning John A. Osborne Airport is almost on the exact opposite side of the Earth from Port Hedland International Airport), and is located 12,183 miles (19,607 kilometers) away in Port Hedland, Western Australia, Australia.
- Because of John A. Osborne Airport's relatively low elevation of 550 feet, planes can take off or land at John A. Osborne 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.