Nonstop flight route between St. Louis, Missouri, United States and Suffield, Alberta, Canada:
Departure Airport:

Arrival Airport:

Distance from STL to YSD:
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- About this route
- STL Airport Information
- YSD Airport Information
- Facts about STL
- Facts about YSD
- Map of Nearest Airports to STL
- List of Nearest Airports to STL
- Map of Furthest Airports from STL
- List of Furthest Airports from STL
- Map of Nearest Airports to YSD
- List of Nearest Airports to YSD
- Map of Furthest Airports from YSD
- List of Furthest Airports from YSD
About this route:
A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and CFB Suffield (YSD), Suffield, Alberta, Canada would travel a Great Circle distance of 1,291 miles (or 2,077 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 Lambert–St. Louis International Airport and CFB Suffield, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | YSD / CYSD |
Airport Name: | CFB Suffield |
Location: | Suffield, Alberta, Canada |
GPS Coordinates: | 50°16'23"N by 111°10'29"W |
Operator/Owner: | Government of Canada |
Airport Type: | Military |
Elevation: | 2525 feet (770 meters) |
View all routes: | Routes from YSD |
More Information: | YSD Maps & Info |
Facts about Lambert–St. Louis International Airport (STL):
- In the late 1920s, Lambert Field became the first airport with an air traffic control system—albeit one that communicated with pilots via waving flags.
- 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.
- The airport grew from a balloon launching base, Kinloch Field, part of the 1890s Kinloch Park suburban development.
- 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 again grew in importance for TWA after the airline declared bankruptcy in 1993 and moved its headquarters to St.
- 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.
- Lambert–St. Louis International Airport (STL) has 4 runways.
- During 2008, Lambert's position as an American Airlines hub faced further pressure due to increased fuel costs and softened demand because of a depressed economy.
Facts about CFB Suffield (YSD):
- The decision to designate the Suffield Block a military training facility in 1941 left tens of square kilometres of undisturbed prairie grassland intact from the effects of industrial agriculture.
- In 1971 an agreement was signed between the British and Canadian governments permitting the British Army to use over three-quarters of the Suffield Block for armoured, infantry, and artillery live-fire training.
- On August 25, 1971, the Canadian Government ratified a ten-year agreement with the British Government that allowed the British Armed Forces to use the northern three-quarters of the Suffield Block.
- The furthest airport from CFB Suffield (YSD) is Tôlanaro Airport (FTU), which is located 10,339 miles (16,640 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to CFB Suffield (YSD) is Medicine Hat Airport (YXH), which is located 27 miles (43 kilometers) SE of YSD.
- The lands comprising modern-day CFB Suffield were known as the "Suffield Block", resulting from the Dominion Land Survey, and comprised marginal agricultural land, given the perpetual semi-arid climate.