Nonstop flight route between Portsmouth, New Hampshire, United States and Ketchikan, Alaska, United States:

About this route:

A direct, nonstop flight between Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and Ketchikan Harbor Seaplane Base (WFB), Ketchikan, Alaska, United States would travel a Great Circle distance of 2,775 miles (or 4,466 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 Portsmouth International Airport at Pease and Ketchikan Harbor 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 Portsmouth International Airport at Pease and Ketchikan Harbor 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 Portsmouth International Airport at Pease (PSM):

• The closest airport to Portsmouth International Airport at Pease (PSM) is Sanford Seacoast Regional Airport (SFM), which is located 23 miles (36 kilometers) NNE of PSM.
• Because of Portsmouth International Airport at Pease's relatively low elevation of 100 feet, planes can take off or land at Portsmouth International Airport at Pease 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.
• Portsmouth International Airport at Pease (PSM) currently has only 1 runway.
• Pease was one of 7 Launch Abort Sites and one of 18 Emergency Landing Sites for NASA space shuttle orbiters.
• The furthest airport from Portsmouth International Airport at Pease (PSM) is Margaret River Airport (MGV), which is located 11,729 miles (18,875 kilometers) away in Margaret River, Western Australia, Australia.

Facts about Ketchikan Harbor Seaplane Base (WFB):

• Ketchikan Harbor Seaplane Base (WFB) currently has only 1 runway.
• Ketchikan Harbor Seaplane Base is a privately owned, public use seaplane base located at the harbor of Ketchikan, a city in the Ketchikan Gateway Borough of the U.S.
• The furthest airport from Ketchikan Harbor Seaplane Base (WFB) is Port Alfred Airport (AFD), which is located 10,613 miles (17,079 kilometers) away in Port Alfred, South Africa.
• The closest airport to Ketchikan Harbor Seaplane Base (WFB) is Ketchikan International Airport (KTN), which is located only 2 miles (3 kilometers) WNW of WFB.
• As per Federal Aviation Administration records, the airport had 38,945 passenger boardings in calendar year 2008, 40,462 enplanements in 2009, and 43,737 in 2010.
• In addition to being known as "Ketchikan Harbor Seaplane Base", another name for WFB is "5KE".
• Because of Ketchikan Harbor Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Ketchikan Harbor 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.