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

Arrival Airport:

Distance from CPS to IOQ:
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- About this route
- CPS Airport Information
- IOQ Airport Information
- Facts about CPS
- Facts about IOQ
- 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 IOQ
- List of Nearest Airports to IOQ
- Map of Furthest Airports from IOQ
- List of Furthest Airports from IOQ
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Isortoq Heliport (IOQ), Isortoq, Greenland would travel a Great Circle distance of 2,737 miles (or 4,404 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 Isortoq Heliport, 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 Isortoq Heliport. 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: | IOQ / BGIS |
Airport Name: | Isortoq Heliport |
Location: | Isortoq, Greenland |
GPS Coordinates: | 65°32'29"N by 38°58'23"W |
Area Served: | Isortoq, Greenland |
Operator/Owner: | Mittarfeqarfiit |
Airport Type: | Public |
Elevation: | 92 feet (28 meters) |
View all routes: | Routes from IOQ |
More Information: | IOQ Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- 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 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.
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
- St. Louis Downtown Airport (CPS) has 3 runways.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
Facts about Isortoq Heliport (IOQ):
- The closest airport to Isortoq Heliport (IOQ) is Tasiilaq Heliport (AGM), which is located 39 miles (63 kilometers) E of IOQ.
- Because of Isortoq Heliport's relatively low elevation of 92 feet, planes can take off or land at Isortoq 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 furthest airport from Isortoq Heliport (IOQ) is Hobart International Airport (HBA), which is located 10,848 miles (17,459 kilometers) away in Hobart, Tasmania, Australia.