Nonstop flight route between Fort Sill, Oklahoma, United States and El Monte, California, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to EMT:
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- About this route
- FSI Airport Information
- EMT Airport Information
- Facts about FSI
- Facts about EMT
- 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 EMT
- List of Nearest Airports to EMT
- Map of Furthest Airports from EMT
- List of Furthest Airports from EMT
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and San Gabriel Valley (El Monte) Airport (EMT), El Monte, California, United States would travel a Great Circle distance of 1,119 miles (or 1,800 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 relatively short distance between Henry Post Army Airfield and San Gabriel Valley (El Monte) Airport, the route shown on this map most likely still appears to be a straight line.
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: | EMT / KEMT |
Airport Name: | San Gabriel Valley (El Monte) Airport |
Location: | El Monte, California, United States |
GPS Coordinates: | 34°5'9"N by 118°2'4"W |
Area Served: | El Monte, California |
Operator/Owner: | American Airports Corp. |
Airport Type: | County of Los Angeles |
Elevation: | 296 feet (90 meters) |
# of Runways: | 1 |
View all routes: | Routes from EMT |
More Information: | EMT Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- 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.
- 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 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
Facts about San Gabriel Valley (El Monte) Airport (EMT):
- The furthest airport from San Gabriel Valley (El Monte) Airport (EMT) is Pierrefonds Airport (ZSE), which is located 11,469 miles (18,458 kilometers) away in Saint-Pierre, Réunion.
- Because of San Gabriel Valley (El Monte) Airport's relatively low elevation of 296 feet, planes can take off or land at San Gabriel Valley (El Monte) 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 closest airport to San Gabriel Valley (El Monte) Airport (EMT) is Brackett Field (POC), which is located only 14 miles (23 kilometers) E of EMT.
- San Gabriel Valley (El Monte) Airport (EMT) currently has only 1 runway.