Nonstop flight route between Bayankhongor, Mongolia and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from BYN to FSI:
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- About this route
- BYN Airport Information
- FSI Airport Information
- Facts about BYN
- Facts about FSI
- Map of Nearest Airports to BYN
- List of Nearest Airports to BYN
- Map of Furthest Airports from BYN
- List of Furthest Airports from BYN
- 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 Bayankhongor Airport (BYN), Bayankhongor, Mongolia and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 6,727 miles (or 10,826 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 Bayankhongor 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 Bayankhongor 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: | BYN / ZMBH |
Airport Name: | Bayankhongor Airport |
Location: | Bayankhongor, Mongolia |
GPS Coordinates: | 46°10'14"N by 100°42'0"E |
Operator/Owner: | Civil Aviation Authority of Mongolia |
Airport Type: | Joint (Civil and Military) |
Elevation: | 6085 feet (1,855 meters) |
# of Runways: | 2 |
View all routes: | Routes from BYN |
More Information: | BYN 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 Bayankhongor Airport (BYN):
- The furthest airport from Bayankhongor Airport (BYN) is Cochrane Airfield (LGR), which is nearly antipodal to Bayankhongor Airport (meaning Bayankhongor Airport is almost on the exact opposite side of the Earth from Cochrane Airfield), and is located 12,110 miles (19,490 kilometers) away in Cochrane, Chile.
- Because of Bayankhongor Airport's high elevation of 6,085 feet, planes must typically fly at a faster airspeed in order to takeoff or land at BYN. Combined with a high temperature, this could make BYN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Bayankhongor Airport handled 2,192 passengers last year.
- Bayankhongor Airport (BYN) has 2 runways.
- The closest airport to Bayankhongor Airport (BYN) is Arvaykheer Airport (AVK), which is located 101 miles (162 kilometers) E of BYN.
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- 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 Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.