Nonstop flight route between Metlakatla, Annette Island, Alaska, United States and Greensboro, North Carolina, United States:
Departure Airport:

Arrival Airport:

Distance from MTM to GSO:
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- About this route
- MTM Airport Information
- GSO Airport Information
- Facts about MTM
- Facts about GSO
- Map of Nearest Airports to MTM
- List of Nearest Airports to MTM
- Map of Furthest Airports from MTM
- List of Furthest Airports from MTM
- Map of Nearest Airports to GSO
- List of Nearest Airports to GSO
- Map of Furthest Airports from GSO
- List of Furthest Airports from GSO
About this route:
A direct, nonstop flight between Metlakatla Seaplane Base (MTM), Metlakatla, Annette Island, Alaska, United States and Piedmont Triad International Airport (GSO), Greensboro, North Carolina, United States would travel a Great Circle distance of 2,739 miles (or 4,408 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 Metlakatla Seaplane Base and Piedmont Triad International 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 Metlakatla Seaplane Base and Piedmont Triad International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | MTM / PAMM |
Airport Name: | Metlakatla Seaplane Base |
Location: | Metlakatla, Annette Island, Alaska, United States |
GPS Coordinates: | 55°7'51"N by 131°34'41"W |
Area Served: | Metlakatla, Alaska |
Operator/Owner: | Alaska DOT&PF - Southeast Region |
Airport Type: | Public |
Elevation: | 0 feet (0 meters) |
# of Runways: | 2 |
View all routes: | Routes from MTM |
More Information: | MTM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | GSO / KGSO |
Airport Name: | Piedmont Triad International Airport |
Location: | Greensboro, North Carolina, United States |
GPS Coordinates: | 36°5'52"N by 79°56'13"W |
Area Served: | Greensboro, High Point, and Winston-Salem, North Carolina |
Operator/Owner: | Piedmont Triad Airport Authority |
Airport Type: | Public |
Elevation: | 926 feet (282 meters) |
# of Runways: | 3 |
View all routes: | Routes from GSO |
More Information: | GSO Maps & Info |
Facts about Metlakatla Seaplane Base (MTM):
- The furthest airport from Metlakatla Seaplane Base (MTM) is Port Alfred Airport (AFD), which is located 10,621 miles (17,093 kilometers) away in Port Alfred, South Africa.
- Metlakatla Seaplane Base (MTM) has 2 runways.
- The closest airport to Metlakatla Seaplane Base (MTM) is Annette Island Airport (ANN), which is located only 6 miles (10 kilometers) S of MTM.
- Because of Metlakatla Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Metlakatla Seaplane Base 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 Piedmont Triad International Airport (GSO):
- The closest airport to Piedmont Triad International Airport (GSO) is Smith Reynolds Airport (INT), which is located only 16 miles (26 kilometers) W of GSO.
- Pitcairn Aviation, Incorporated was given the contract to fly the airmail route, the second official airmail route in the United States, and Pitcairn Aviation made the first delivery of airmail in North Carolina on May 1, 1928.
- A third runway was built to accommodate the hub operation, parallel to one of the existing ones.
- Skybus Airlines began service to Port Columbus International Airport as well in May 2007.
- Piedmont Triad International Airport (GSO) has 3 runways.
- The furthest airport from Piedmont Triad International Airport (GSO) is Margaret River Airport (MGV), which is located 11,574 miles (18,626 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Piedmont Triad International Airport's relatively low elevation of 926 feet, planes can take off or land at Piedmont Triad 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.
- Also in the mid-1990s, start-up carrier Eastwind Airlines began serving PTI.