Nonstop flight route between Greensboro, North Carolina, United States and Port Graham, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from GSO to PGM:
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- About this route
- GSO Airport Information
- PGM Airport Information
- Facts about GSO
- Facts about PGM
- Map of Nearest Airports to GSO
- List of Nearest Airports to GSO
- Map of Furthest Airports from GSO
- List of Furthest Airports from GSO
- Map of Nearest Airports to PGM
- List of Nearest Airports to PGM
- Map of Furthest Airports from PGM
- List of Furthest Airports from PGM
About this route:
A direct, nonstop flight between Piedmont Triad International Airport (GSO), Greensboro, North Carolina, United States and Port Graham Airport (PGM), Port Graham, Alaska, United States would travel a Great Circle distance of 3,495 miles (or 5,625 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 Piedmont Triad International Airport and Port Graham 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 Piedmont Triad International Airport and Port Graham Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | PGM / |
Airport Name: | Port Graham Airport |
Location: | Port Graham, Alaska, United States |
GPS Coordinates: | 59°20'53"N by 151°49'54"W |
Area Served: | Port Graham, Alaska |
Operator/Owner: | Alaska DOT&PF - Central Region |
Airport Type: | Public |
Elevation: | 93 feet (28 meters) |
# of Runways: | 1 |
View all routes: | Routes from PGM |
More Information: | PGM Maps & Info |
Facts about Piedmont Triad International Airport (GSO):
- The Cargo Terminals have expanded in the last 13 years.
- 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.
- In the mid-1990s Continental Airlines developed a hub at the airport, largely to support its new Continental Lite low-fare product.
- Delta Connection carrier Comair built a maintenance hangar at PTI to perform work on their CRJ's in 2005, bringing nearly 60 mechanics to Greensboro.
- 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.
- Piedmont Triad International Airport (GSO) has 3 runways.
- 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.
- Also in the mid-1990s, start-up carrier Eastwind Airlines began serving PTI.
- Piedmont Triad International Airport had its start in 1927 when the Tri-City Airport Commission selected 112 acres near the community of Friendship for an airport, and petitioned to become a stop along the congressionally authorized airmail route from New York to New Orleans.
- In July 1942 responsibility for the airport was given to the Greensboro-High Point Airport Authority, with representatives from Greensboro, High Point, and the Sedgefield community.
- Independence Air began service into Greensboro when the airline started up with service to Washington Dulles International Airport.
- The hub building opened on June 2, 2009, but only opened with the same amount of employees and flights as the old sorting facility.
Facts about Port Graham Airport (PGM):
- Port Graham Airport (PGM) currently has only 1 runway.
- The closest airport to Port Graham Airport (PGM) is Nanwalek Airport (formerly English Bay Airport) (KEB), which is located only 3 miles (5 kilometers) W of PGM.
- Because of Port Graham Airport's relatively low elevation of 93 feet, planes can take off or land at Port Graham 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 Port Graham Airport (PGM) is Port Elizabeth International Airport (PLZ), which is located 10,680 miles (17,188 kilometers) away in Port Elizabeth, South Africa.