Nonstop flight route between Frying Pan Island (near Parry Sound), Ontario, Canada and St. Louis, Missouri, United States:
Departure Airport:

Arrival Airport:

Distance from YSI to STL:
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- About this route
- YSI Airport Information
- STL Airport Information
- Facts about YSI
- Facts about STL
- 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 STL
- List of Nearest Airports to STL
- Map of Furthest Airports from STL
- List of Furthest Airports from STL
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 Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States would travel a Great Circle distance of 687 miles (or 1,105 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 Lambert–St. Louis International Airport, 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: | STL / KSTL |
Airport Name: | Lambert–St. Louis International Airport |
Location: | St. Louis, Missouri, United States |
GPS Coordinates: | 38°44'49"N by 90°21'41"W |
Area Served: | Greater St. Louis, Missouri |
Operator/Owner: | City of St. Louis |
Airport Type: | Public |
Elevation: | 605 feet (184 meters) |
# of Runways: | 4 |
View all routes: | Routes from STL |
More Information: | STL 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".
- 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.
- 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.
Facts about Lambert–St. Louis International Airport (STL):
- On July 16, 2003, AA announced it was significantly reducing its Lambert hub effective November 1, 2003, cutting it from 417 daily flights to 207, effective November 1, 2003.
- The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
- In 1985, Southwest Airlines began service, an event that would lead to major changes at the airport in the coming years.
- Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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.
- Lambert–St. Louis International Airport (STL) has 4 runways.
- Ozark Airlines established its only hub at Lambert in the late 1950s.
- The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
- During the war, the airport became a manufacturing base for McDonnell Aircraft and Curtiss-Wright.
- On October 22, 2012, a Virgin Atlantic Airbus A340 landed at Lambert carrying VA Executives, including Richard Branson to discuss and explore the likelihood of a St Louis Route.