Nonstop flight route between Greensboro, North Carolina, United States and Port Alexander, Alaska, United States:

About this route:

A direct, nonstop flight between Piedmont Triad International Airport (GSO), Greensboro, North Carolina, United States and Port Alexander Seaplane Base (PTD), Port Alexander, Alaska, United States would travel a Great Circle distance of 2,866 miles (or 4,612 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 Alexander Seaplane Base, 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 Alexander Seaplane Base. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Piedmont Triad International Airport (GSO):

• US Airways operates a US Airways Club across from Gate 45.
• In December 2008, FedEx Express said that it would open the hub on time in June 2009, but it will operate at nowhere near capacity.
• The new passenger terminal opened in 1958, replacing the temporary facility that had served since World War II.
• 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.
• Piedmont Triad International Airport (GSO) has 3 runways.
• 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.
• 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.
• 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.

Facts about Port Alexander Seaplane Base (PTD):

• In addition to being known as "Port Alexander Seaplane Base", another name for PTD is "AHP".
• Because of Port Alexander Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Port Alexander 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.
• The closest airport to Port Alexander Seaplane Base (PTD) is Point Baker Seaplane Base (KPB), which is located 40 miles (64 kilometers) E of PTD.
• As per Federal Aviation Administration records, the airport had 139 passenger boardings in calendar year 2008, 189 enplanements in 2009, and 146 in 2010.
• The furthest airport from Port Alexander Seaplane Base (PTD) is Port Alfred Airport (AFD), which is located 10,640 miles (17,123 kilometers) away in Port Alfred, South Africa.
• Port Alexander Seaplane Base (PTD) currently has only 1 runway.