Nonstop flight route between St. Mary's, Alaska, United States and Cape Gloucester, Papua New Guinea:
Departure Airport:

Arrival Airport:

Distance from KSM to CGC:
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- About this route
- KSM Airport Information
- CGC Airport Information
- Facts about KSM
- Facts about CGC
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to CGC
- List of Nearest Airports to CGC
- Map of Furthest Airports from CGC
- List of Furthest Airports from CGC
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Cape Gloucester Airport (CGC), Cape Gloucester, Papua New Guinea would travel a Great Circle distance of 5,314 miles (or 8,552 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. Mary's Airport and Cape Gloucester 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. Mary's Airport and Cape Gloucester Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | KSM / PASM |
Airport Name: | St. Mary's Airport |
Location: | St. Mary's, Alaska, United States |
GPS Coordinates: | 62°3'38"N by 163°18'6"W |
Operator/Owner: | Alaska DOT&PF |
Airport Type: | Public |
Elevation: | 312 feet (95 meters) |
# of Runways: | 2 |
View all routes: | Routes from KSM |
More Information: | KSM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CGC / AYCG |
Airport Names: |
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Location: | Cape Gloucester, Papua New Guinea |
GPS Coordinates: | 5°27'33"S by 148°25'57"E |
Airport Type: | Public |
Elevation: | 78 feet (24 meters) |
# of Runways: | 1 |
View all routes: | Routes from CGC |
More Information: | CGC Maps & Info |
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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 closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
Facts about Cape Gloucester Airport (CGC):
- Construction of Cape Gloucester Airport originally began in 1942 by the Australians.
- In addition, the 12th Defense Battalion was assigned to the airfield between 30 December 1943 - late May 1944 Australian RAAF Units Based at Cape Gloucester consisted of the 78 Squadron, equipped with P-40 Warhawks.
- Cape Gloucester Airport (CGC) currently has only 1 runway.
- The closest airport to Cape Gloucester Airport (CGC) is Finschhafen Airport (FIN), which is located 90 miles (144 kilometers) SSW of CGC.
- Because of Cape Gloucester Airport's relatively low elevation of 78 feet, planes can take off or land at Cape Gloucester 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.
- In addition to being known as "Cape Gloucester Airport", other names for CGC include "CPG" and "Cape Gloucester Airport".
- The furthest airport from Cape Gloucester Airport (CGC) is Governador Carlos Wilson Airport (FEN), which is located 11,791 miles (18,975 kilometers) away in Fernando de Noronha, Pernambuco, Brazil.