Nonstop flight route between Hyder, Alaska, United States and Galle, Sri Lanka:

About this route:

A direct, nonstop flight between Hyder Seaplane Base (WHD), Hyder, Alaska, United States and Koggala Airport (KCT), Galle, Sri Lanka would travel a Great Circle distance of 7,825 miles (or 12,593 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 Hyder Seaplane Base and Koggala 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 Hyder Seaplane Base and Koggala Airport. 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 Hyder Seaplane Base (WHD):

• The closest airport to Hyder Seaplane Base (WHD) is Stewart Aerodrome (ZST), which is located only 2 miles (4 kilometers) NNE of WHD.
• In addition to being known as "Hyder Seaplane Base", another name for WHD is "4Z7".
• 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.
• Hyder Seaplane Base (WHD) currently has only 1 runway.
• 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.

Facts about Koggala Airport (KCT):

• In addition to being known as "Koggala Airport", another name for KCT is "කොග්ගල ගුවන්තොටුපළ".
• The closest airport to Koggala Airport (KCT) is Mattala Rajapaksa International Airport (HRI), which is located 59 miles (95 kilometers) ENE of KCT.
• Koggala Airport in Sri Lanka was originally a Royal Air Force Station RAF Koggala.
• The furthest airport from Koggala Airport (KCT) is Seymour Airport (GPS), which is located 11,683 miles (18,802 kilometers) away in Baltra Island, Galápagos Islands, Ecuador.
• Prior to the Second World War, the lake at Koggala was used for seaplanes.
• QEA and Imperial Airways flew Consolidated PBY Catalina flying boats from Koggala lake to the Swan River at Perth, on what was at the time the world's longest non-stop air route.
• Because of Koggala Airport's relatively low elevation of 10 feet, planes can take off or land at Koggala 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 Government of Sri Lanka expects to upgrade the Koggala airport to international standards as an alternative airport to the BIA.