Nonstop flight route between Frying Pan Island (near Parry Sound), Ontario, Canada and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from YSI to FSI:
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- About this route
- YSI Airport Information
- FSI Airport Information
- Facts about YSI
- Facts about FSI
- Map of Nearest Airports to YSI
- List of Nearest Airports to YSI
- Map of Furthest Airports from YSI
- List of Furthest Airports from YSI
- 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 Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome (YSI), Frying Pan Island (near Parry Sound), Ontario, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,206 miles (or 1,941 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 Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome 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: | YSI / |
Airport Names: |
|
Location: | Frying Pan Island (near Parry Sound), Ontario, Canada |
GPS Coordinates: | 45°10'23"N by 80°8'15"W |
Operator/Owner: | Henry's Fish Restaurant |
Airport Type: | Public |
Elevation: | 580 feet (177 meters) |
View all routes: | Routes from YSI |
More Information: | YSI 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 Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome (YSI):
- In addition to being known as "Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome", another name for YSI is "CPS9".
- Because of Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome's relatively low elevation of 580 feet, planes can take off or land at Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome 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 Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome (YSI) is Parry Sound Area Municipal Airport (YPD), which is located only 16 miles (26 kilometers) ENE of YSI.
- The furthest airport from Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome (YSI) is Margaret River Airport (MGV), which is located 11,317 miles (18,213 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Henry Post Army Airfield (FSI):
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.