Nonstop flight route between Seongnam, South Korea and Hyder, Alaska, United States:

About this route:

A direct, nonstop flight between Seoul Air Base (SSN), Seongnam, South Korea and Hyder Seaplane Base (WHD), Hyder, Alaska, United States would travel a Great Circle distance of 4,571 miles (or 7,356 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 Seoul Air Base and Hyder 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 Seoul Air Base and Hyder 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 Seoul Air Base (SSN):

• The furthest airport from Seoul Air Base (SSN) is Capitán de Corbeta Carlos A. Curbelo International Airport (PDP), which is nearly antipodal to Seoul Air Base (meaning Seoul Air Base is almost on the exact opposite side of the Earth from Capitán de Corbeta Carlos A. Curbelo International Airport), and is located 12,220 miles (19,665 kilometers) away in Maldonado/Punta del Este, Maldonado, Uruguay.
• The USAF designated the base at K-16 during the Korean War.
• Seoul Air Base (SSN) has 2 runways.
• The closest airport to Seoul Air Base (SSN) is Gimpo International Airport (GMP), which is located only 19 miles (31 kilometers) WNW of SSN.
• The US Army's 2nd Battalion, 2nd Aviation Regiment, 2nd Infantry Division operating Sikorsky UH-60 Blackhawks is based there.
• Because of Seoul Air Base's relatively low elevation of 92 feet, planes can take off or land at Seoul Air 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.
• In addition to being known as "Seoul Air Base", another name for SSN is "서울공항".

Facts about Hyder Seaplane Base (WHD):

• Hyder Seaplane Base (WHD) currently has only 1 runway.
• Hyder Seaplane Base is a state owned, public use seaplane base located one nautical mile southeast of the central business district of Hyder, a community in the Prince of Wales-Hyder Census Area of the U.S.
• There are two floats for seaplanes, one along the shoreline and another within a protected cove with a concrete launch ramp.
• In addition to being known as "Hyder Seaplane Base", another name for WHD is "4Z7".
• The furthest airport from Hyder Seaplane Base (WHD) is Port Alfred Airport (AFD), which is located 10,540 miles (16,962 kilometers) away in Port Alfred, South Africa.
• The closest airport to Hyder Seaplane Base (WHD) is Stewart Aerodrome (ZST), which is located only 2 miles (4 kilometers) NNE of WHD.
• Because of Hyder Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Hyder 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.