Nonstop flight route between Alma, Michigan, United States and Hyder, Alaska, United States:
Departure Airport:
Arrival Airport:
Distance from AMN to WHD:
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- About this route
 - AMN Airport Information
 - WHD Airport Information
 - Facts about AMN
 - Facts about WHD
 - Map of Nearest Airports to AMN
 - List of Nearest Airports to AMN
 - Map of Furthest Airports from AMN
 - List of Furthest Airports from AMN
 - Map of Nearest Airports to WHD
 - List of Nearest Airports to WHD
 - Map of Furthest Airports from WHD
 - List of Furthest Airports from WHD
 
About this route:
A direct, nonstop flight between Gratiot Community Airport (AMN), Alma, Michigan, United States and Hyder Seaplane Base (WHD), Hyder, Alaska, United States would travel a Great Circle distance of 2,159 miles (or 3,475 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 relatively short distance between Gratiot Community Airport and Hyder Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | AMN / KAMN | 
| Airport Name: | Gratiot Community Airport | 
| Location: | Alma, Michigan, United States | 
| GPS Coordinates: | 43°19'19"N by 84°41'17"W | 
| Area Served: | Alma, Michigan | 
| Operator/Owner: | City of Alma & County of Gratiot | 
| Airport Type: | Public | 
| Elevation: | 754 feet (230 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from AMN | 
| More Information: | AMN Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | WHD / | 
| Airport Names: | 
                    
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| Location: | Hyder, Alaska, United States | 
| GPS Coordinates: | 55°54'11"N by 130°0'24"W | 
| Area Served: | Hyder, Alaska | 
| Operator/Owner: | Alaska DOT&PF - Southeast Region | 
| Airport Type: | Public | 
| Elevation: | 0 feet (0 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from WHD | 
| More Information: | WHD Maps & Info | 
Facts about Gratiot Community Airport (AMN):
- For the 12-month period ending December 31, 2007, the airport had 9,500 general aviation aircraft operations, an average of 26 per day.
 - Because of Gratiot Community Airport's relatively low elevation of 754 feet, planes can take off or land at Gratiot Community 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.
 - Gratiot Community Airport (AMN) has 2 runways.
 - The furthest airport from Gratiot Community Airport (AMN) is Margaret River Airport (MGV), which is located 11,192 miles (18,011 kilometers) away in Margaret River, Western Australia, Australia.
 - The closest airport to Gratiot Community Airport (AMN) is Mount Pleasant Municipal Airport (MOP), which is located 21 miles (34 kilometers) N of AMN.
 
Facts about Hyder Seaplane Base (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.
 - Hyder Seaplane Base has one seaplane landing area designated N/S with a water surface measuring 10,000 by 1,000 feet.
 - 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.
 - 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.
 - In addition to being known as "Hyder Seaplane Base", another name for WHD is "4Z7".
 - The closest airport to Hyder Seaplane Base (WHD) is Stewart Aerodrome (ZST), which is located only 2 miles (4 kilometers) NNE of WHD.
 
