Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Rottnest Island, Western Australia, Australia:
Departure Airport:

Arrival Airport:

Distance from CPS to RTS:
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- About this route
- CPS Airport Information
- RTS Airport Information
- Facts about CPS
- Facts about RTS
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
- Map of Nearest Airports to RTS
- List of Nearest Airports to RTS
- Map of Furthest Airports from RTS
- List of Furthest Airports from RTS
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Rottnest Airport (RTS), Rottnest Island, Western Australia, Australia would travel a Great Circle distance of 10,924 miles (or 17,581 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 large distance between St. Louis Downtown Airport and Rottnest Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between St. Louis Downtown Airport and Rottnest Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | RTS / YRTI |
Airport Name: | Rottnest Airport |
Location: | Rottnest Island, Western Australia, Australia |
GPS Coordinates: | 32°0'24"S by 115°32'22"E |
Operator/Owner: | Rottnest Island Authority |
Airport Type: | Public |
Elevation: | 12 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from RTS |
More Information: | RTS Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
- The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
- St. Louis Downtown Airport (CPS) has 3 runways.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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.
- The two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
- The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
Facts about Rottnest Airport (RTS):
- The closest airport to Rottnest Airport (RTS) is Jandakot Airport (JAD), which is located 21 miles (34 kilometers) ESE of RTS.
- MacRobertson Miller Airlines took over services after Wood's Airways using both DC-3 and Fokker F27 Friendship, until the route became uneconomical.
- At one stage, the 32 km Perth to Rottnest flight was the world's shortest scheduled air route.
- On 12 November 2006 a light twin engine charter aircraft carrying the pilot and five passengers crashed on the edge of the salt lake adjoining the airport.
- Rottnest Airport (RTS) currently has only 1 runway.
- The furthest airport from Rottnest Airport (RTS) is L.F. Wade International Airport (BDA), which is nearly antipodal to Rottnest Airport (meaning Rottnest Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,409 miles (19,970 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
- Because of Rottnest Airport's relatively low elevation of 12 feet, planes can take off or land at Rottnest 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.