Nonstop flight route between Santa Rosa, El Oro, Ecuador and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from ETR to FSI:
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- About this route
- ETR Airport Information
- FSI Airport Information
- Facts about ETR
- Facts about FSI
- Map of Nearest Airports to ETR
- List of Nearest Airports to ETR
- Map of Furthest Airports from ETR
- List of Furthest Airports from ETR
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Santa Rosa International Airport (ETR), Santa Rosa, El Oro, Ecuador and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 2,891 miles (or 4,652 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 Santa Rosa International Airport and Henry Post Army Airfield, 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 Santa Rosa International Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | ETR / SERO |
Airport Names: |
|
Location: | Santa Rosa, El Oro, Ecuador |
GPS Coordinates: | 3°26'7"S by 79°58'40"W |
Area Served: | Machala |
Elevation: | 170 feet (52 meters) |
# of Runways: | 1 |
View all routes: | Routes from ETR |
More Information: | ETR Maps & Info |
Arrival 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 |
Facts about Santa Rosa International Airport (ETR):
- In addition to being known as "Santa Rosa International Airport", another name for ETR is "Aeropuerto Internacional de Santa Rosa".
- Santa Rosa International Airport (ETR) currently has only 1 runway.
- Because of Santa Rosa International Airport's relatively low elevation of 170 feet, planes can take off or land at Santa Rosa International 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 Santa Rosa International Airport (ETR) is Cap. FAP Pedro Canga Rodríguez Airport (TBP), which is located 29 miles (47 kilometers) WSW of ETR.
- The furthest airport from Santa Rosa International Airport (ETR) is Sitiawan Airport (SWY), which is nearly antipodal to Santa Rosa International Airport (meaning Santa Rosa International Airport is almost on the exact opposite side of the Earth from Sitiawan Airport), and is located 12,365 miles (19,900 kilometers) away in Perak, Malaysia.
Facts about Henry Post Army Airfield (FSI):
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- 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 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.
- 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.