Nonstop flight route between Fort Sill, Oklahoma, United States and Chillán, Ñuble, Chile:
Departure Airport:

Arrival Airport:

Distance from FSI to YAI:
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- About this route
- FSI Airport Information
- YAI Airport Information
- Facts about FSI
- Facts about YAI
- 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 YAI
- List of Nearest Airports to YAI
- Map of Furthest Airports from YAI
- List of Furthest Airports from YAI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and General Bernardo O'Higgins Airport (YAI), Chillán, Ñuble, Chile would travel a Great Circle distance of 5,206 miles (or 8,378 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 General Bernardo O'Higgins 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 General Bernardo O'Higgins 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: | YAI / SCCH |
Airport Name: | General Bernardo O'Higgins Airport |
Location: | Chillán, Ñuble, Chile |
GPS Coordinates: | 36°34'57"S by 72°1'53"W |
Operator/Owner: | Estado de Chile |
Airport Type: | Public |
Elevation: | 495 feet (151 meters) |
# of Runways: | 1 |
View all routes: | Routes from YAI |
More Information: | YAI 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
Facts about General Bernardo O'Higgins Airport (YAI):
- The furthest airport from General Bernardo O'Higgins Airport (YAI) is Qingyang Airport (IQN), which is nearly antipodal to General Bernardo O'Higgins Airport (meaning General Bernardo O'Higgins Airport is almost on the exact opposite side of the Earth from Qingyang Airport), and is located 12,379 miles (19,922 kilometers) away in Qingyang, Gansu, China.
- General Bernardo O'Higgins Airport (YAI) currently has only 1 runway.
- The closest airport to General Bernardo O'Higgins Airport (YAI) is Carriel Sur International Airport (CCP), which is located 59 miles (94 kilometers) WSW of YAI.
- Because of General Bernardo O'Higgins Airport's relatively low elevation of 495 feet, planes can take off or land at General Bernardo O'Higgins 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.