Nonstop flight route between St. Anthony, Newfoundland and Labrador, Canada and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from YAY to FSI:
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- About this route
- YAY Airport Information
- FSI Airport Information
- Facts about YAY
- Facts about FSI
- Map of Nearest Airports to YAY
- List of Nearest Airports to YAY
- Map of Furthest Airports from YAY
- List of Furthest Airports from YAY
- 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 St. Anthony Airport (YAY), St. Anthony, Newfoundland and Labrador, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 2,386 miles (or 3,839 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 St. Anthony Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | YAY / CYAY |
Airport Name: | St. Anthony Airport |
Location: | St. Anthony, Newfoundland and Labrador, Canada |
GPS Coordinates: | 51°23'30"N by 56°4'59"W |
Operator/Owner: | Transport Canada |
Airport Type: | Public |
Elevation: | 108 feet (33 meters) |
# of Runways: | 1 |
View all routes: | Routes from YAY |
More Information: | YAY 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 St. Anthony Airport (YAY):
- The closest airport to St. Anthony Airport (YAY) is Lourdes-de-Blanc-Sablon Airport (YBX), which is located 48 miles (77 kilometers) W of YAY.
- Because of St. Anthony Airport's relatively low elevation of 108 feet, planes can take off or land at St. Anthony 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.
- St. Anthony Airport (YAY) currently has only 1 runway.
- The furthest airport from St. Anthony Airport (YAY) is Albany Airport (ALH), which is located 11,260 miles (18,122 kilometers) away in Albany, Western Australia, Australia.
Facts about Henry Post Army Airfield (FSI):
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Henry Post Army Airfield (FSI) currently has only 1 runway.