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

Arrival Airport:

Distance from CPS to QGQ:
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- About this route
- CPS Airport Information
- QGQ Airport Information
- Facts about CPS
- Facts about QGQ
- 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 QGQ
- List of Nearest Airports to QGQ
- Map of Furthest Airports from QGQ
- List of Furthest Airports from QGQ
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Attu Heliport (QGQ), Attu Island, Greenland would travel a Great Circle distance of 2,455 miles (or 3,951 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 St. Louis Downtown Airport and Attu Heliport, the route shown on this map most likely still appears to be a straight line.
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: | QGQ / BGAT |
Airport Name: | Attu Heliport |
Location: | Attu Island, Greenland |
GPS Coordinates: | 67°56'30"N by 53°37'59"W |
Area Served: | Attu, Greenland |
Operator/Owner: | Mittarfeqarfiit |
Airport Type: | Public |
Elevation: | 32 feet (10 meters) |
View all routes: | Routes from QGQ |
More Information: | QGQ Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.
- 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.
Facts about Attu Heliport (QGQ):
- The furthest airport from Attu Heliport (QGQ) is Hobart International Airport (HBA), which is located 10,537 miles (16,957 kilometers) away in Hobart, Tasmania, Australia.
- Because of Attu Heliport's relatively low elevation of 32 feet, planes can take off or land at Attu Heliport 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 Attu Heliport (QGQ) is Ikerasaarsuk Heliport (QRY), which is located only 15 miles (24 kilometers) NNE of QGQ.