Nonstop flight route between Fort Sill, Oklahoma, United States and Lucknow, India:
Departure Airport:

Arrival Airport:

Distance from FSI to LKO:
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- About this route
- FSI Airport Information
- LKO Airport Information
- Facts about FSI
- Facts about LKO
- 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 LKO
- List of Nearest Airports to LKO
- Map of Furthest Airports from LKO
- List of Furthest Airports from LKO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Chaudhary Charan Singh International Airport (LKO), Lucknow, India would travel a Great Circle distance of 8,193 miles (or 13,186 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 Chaudhary Charan Singh International 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 Chaudhary Charan Singh International 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: | LKO / VILK |
Airport Name: | Chaudhary Charan Singh International Airport |
Location: | Lucknow, India |
GPS Coordinates: | 26°45'42"N by 80°52'59"E |
Area Served: | Lucknow |
Operator/Owner: | Airports Authority of India |
Airport Type: | Public |
Elevation: | 404 feet (123 meters) |
# of Runways: | 1 |
View all routes: | Routes from LKO |
More Information: | LKO Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
Facts about Chaudhary Charan Singh International Airport (LKO):
- The closest airport to Chaudhary Charan Singh International Airport (LKO) is Kanpur Airport कानपुर हवाई अड्डा کان پور ہوائی اڈا (KNU), which is located 38 miles (62 kilometers) SW of LKO.
- The Airport Authority of India is planning to expand the runway of the airport so that large aircraft, like the Boeing 777, can land there and there is also a plan for the expansion of the Terminal 1 of the airport with an aerobrige so that more passengers can fly from there.
- Because of Chaudhary Charan Singh International Airport's relatively low elevation of 404 feet, planes can take off or land at Chaudhary Charan Singh 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.
- Chaudhary Charan Singh International Airport (LKO) currently has only 1 runway.
- The furthest airport from Chaudhary Charan Singh International Airport (LKO) is Mataveri International Airport (IPC), which is located 11,802 miles (18,993 kilometers) away in Easter Island, Chile.
- Chaudhary Charan Singh International Airport, is situated at Amausi, serving the city of Lucknow in Uttar Pradesh, India.