Nonstop flight route between Fort Sill, Oklahoma, United States and Tres Arroyos, Buenos Aires Province, Argentina:
Departure Airport:

Arrival Airport:

Distance from FSI to OYO:
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- About this route
- FSI Airport Information
- OYO Airport Information
- Facts about FSI
- Facts about OYO
- 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 OYO
- List of Nearest Airports to OYO
- Map of Furthest Airports from OYO
- List of Furthest Airports from OYO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Tres Arroyos Airport (OYO), Tres Arroyos, Buenos Aires Province, Argentina would travel a Great Circle distance of 5,604 miles (or 9,019 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 Tres Arroyos 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 Tres Arroyos 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: | OYO / SAZH |
Airport Name: | Tres Arroyos Airport |
Location: | Tres Arroyos, Buenos Aires Province, Argentina |
GPS Coordinates: | 38°23'12"S by 60°19'46"W |
Area Served: | Tres Arroyos |
Airport Type: | Public |
Elevation: | 400 feet (122 meters) |
# of Runways: | 3 |
View all routes: | Routes from OYO |
More Information: | OYO 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.
- 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 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
Facts about Tres Arroyos Airport (OYO):
- Tres Arroyos Airport (OYO) has 3 runways.
- Because of Tres Arroyos Airport's relatively low elevation of 400 feet, planes can take off or land at Tres Arroyos 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.
- The furthest airport from Tres Arroyos Airport (OYO) is Dalian Zhoushuizi International Airport (DLC), which is nearly antipodal to Tres Arroyos Airport (meaning Tres Arroyos Airport is almost on the exact opposite side of the Earth from Dalian Zhoushuizi International Airport), and is located 12,328 miles (19,841 kilometers) away in Dalian, Liaoning, China.
- The closest airport to Tres Arroyos Airport (OYO) is Necochea Airport (NEC), which is located 82 miles (132 kilometers) E of OYO.