Nonstop flight route between Fort Sill, Oklahoma, United States and Poplar Hill, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YHP:
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- About this route
- FSI Airport Information
- YHP Airport Information
- Facts about FSI
- Facts about YHP
- 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 YHP
- List of Nearest Airports to YHP
- Map of Furthest Airports from YHP
- List of Furthest Airports from YHP
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Poplar Hill Airport (YHP), Poplar Hill, Ontario, Canada would travel a Great Circle distance of 1,224 miles (or 1,970 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 Poplar Hill 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: | YHP / CYHP |
Airport Names: |
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Location: | Poplar Hill, Ontario, Canada |
GPS Coordinates: | 52°6'47"N by 94°15'20"W |
Operator/Owner: | Government of Ontario |
Airport Type: | Public |
Elevation: | 1095 feet (334 meters) |
# of Runways: | 1 |
View all routes: | Routes from YHP |
More Information: | YHP Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- Post Field served as a base for flight training for the Air Service.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
Facts about Poplar Hill Airport (YHP):
- Poplar Hill Airport (YHP) currently has only 1 runway.
- In addition to being known as "Poplar Hill Airport", another name for YHP is "CPV7".
- The furthest airport from Poplar Hill Airport (YHP) is Margaret River Airport (MGV), which is located 10,516 miles (16,925 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Poplar Hill Airport (YHP) is Pikangikum Airport (YPM), which is located 24 miles (38 kilometers) SSE of YHP.