Nonstop flight route between St. Louis, Missouri, United States and Round Lake, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from STL to ZRJ:
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- About this route
- STL Airport Information
- ZRJ Airport Information
- Facts about STL
- Facts about ZRJ
- 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 ZRJ
- List of Nearest Airports to ZRJ
- Map of Furthest Airports from ZRJ
- List of Furthest Airports from ZRJ
About this route:
A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Round Lake (Weagamow Lake) Airport (ZRJ), Round Lake, Ontario, Canada would travel a Great Circle distance of 982 miles (or 1,580 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 Round Lake (Weagamow Lake) Airport, 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: | ZRJ / CZRJ |
Airport Name: | Round Lake (Weagamow Lake) Airport |
Location: | Round Lake, Ontario, Canada |
GPS Coordinates: | 52°56'36"N by 91°18'45"W |
Operator/Owner: | Government of Ontario |
Airport Type: | Public |
Elevation: | 974 feet (297 meters) |
# of Runways: | 1 |
View all routes: | Routes from ZRJ |
More Information: | ZRJ Maps & Info |
Facts about Lambert–St. Louis International Airport (STL):
- Lambert–St. Louis International Airport (STL) has 4 runways.
- To handle the increasing passenger traffic, Minoru Yamasaki was commissioned to design a new terminal at Lambert.
- Lambert's passenger traffic slowly rebounded from American Airlines' cuts of November 2003, increasing from a low of 13.4 million passengers enplaned in 2004, to 15.4 million by 2007, and increase of almost 15 percent.
- Despite the entry of Southwest Airlines in the market, the TWA buyout of Ozark and subsequent increase in the number of nonstop cities served, the total number of passengers using Lambert held steady from 1985 through 1993, ranging between 19 million and 20 million passengers per year throughout the period.
- 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 April 1957 Official Airline Guide shows TWA with 44 weekday departures.
- 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 again grew in importance for TWA after the airline declared bankruptcy in 1993 and moved its headquarters to St.
- 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.
Facts about Round Lake (Weagamow Lake) Airport (ZRJ):
- The furthest airport from Round Lake (Weagamow Lake) Airport (ZRJ) is Margaret River Airport (MGV), which is located 10,591 miles (17,044 kilometers) away in Margaret River, Western Australia, Australia.
- Round Lake (Weagamow Lake) Airport (ZRJ) currently has only 1 runway.
- The closest airport to Round Lake (Weagamow Lake) Airport (ZRJ) is Muskrat Dam Airport (MSA), which is located 39 miles (63 kilometers) NNW of ZRJ.
- Because of Round Lake (Weagamow Lake) Airport's relatively low elevation of 974 feet, planes can take off or land at Round Lake (Weagamow Lake) 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.