Nonstop flight route between Port Alexander, Alaska, United States and Reading, Pennsylvania, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from PTD to RDG:
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- About this route
- PTD Airport Information
- RDG Airport Information
- Facts about PTD
- Facts about RDG
- Map of Nearest Airports to PTD
- List of Nearest Airports to PTD
- Map of Furthest Airports from PTD
- List of Furthest Airports from PTD
- Map of Nearest Airports to RDG
- List of Nearest Airports to RDG
- Map of Furthest Airports from RDG
- List of Furthest Airports from RDG
About this route:
A direct, nonstop flight between Port Alexander Seaplane Base (PTD), Port Alexander, Alaska, United States and Reading Regional Airport (RDG), Reading, Pennsylvania, United States would travel a Great Circle distance of 2,809 miles (or 4,521 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 Port Alexander Seaplane Base and Reading Regional 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 Port Alexander Seaplane Base and Reading Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PTD / PAAP | 
| Airport Names: | 
 | 
| Location: | Port Alexander, Alaska, United States | 
| GPS Coordinates: | 56°14'48"N by 134°38'53"W | 
| Area Served: | Port Alexander, Alaska | 
| Operator/Owner: | Alaska DOT&PF - Southeast Region | 
| Airport Type: | Public | 
| Elevation: | 0 feet (0 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from PTD | 
| More Information: | PTD Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | RDG / KRDG | 
| Airport Names: | 
 | 
| Location: | Reading, Pennsylvania, United States | 
| GPS Coordinates: | 40°22'42"N by 75°57'55"W | 
| Area Served: | Reading, Pennsylvania | 
| Operator/Owner: | Reading Regional Airport Authority | 
| Airport Type: | Public | 
| Elevation: | 344 feet (105 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from RDG | 
| More Information: | RDG Maps & Info | 
Facts about Port Alexander Seaplane Base (PTD):
- Port Alexander Seaplane Base is a state owned, public use seaplane base located in Port Alexander, a city at the southeastern corner of Baranof Island in the Petersburg Census Area of the U.S.
- 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.
- 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.
- 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.
- In addition to being known as "Port Alexander Seaplane Base", another name for PTD is "AHP".
- Port Alexander Seaplane Base has one seaplane landing area designated N/S which measures 3,000 by 300 feet.
- Port Alexander Seaplane Base (PTD) currently has only 1 runway.
Facts about Reading Regional Airport (RDG):
- The closest airport to Reading Regional Airport (RDG) is Heritage Field (PTW), which is located 24 miles (38 kilometers) ESE of RDG.
- Southwest Airlines no longer operates in Reading Airport.
- The furthest airport from Reading Regional Airport (RDG) is Margaret River Airport (MGV), which is located 11,683 miles (18,802 kilometers) away in Margaret River, Western Australia, Australia.
- In addition to being known as "Reading Regional Airport", another name for RDG is "Carl A. Spaatz FieldReading Army Airfield".
- Reading Regional Airport (RDG) has 2 runways.
- Because of Reading Regional Airport's relatively low elevation of 344 feet, planes can take off or land at Reading Regional 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.
- Reading Army Airfield opened on 1 June 1943, with the 309th Base Headquarters and Air Base Squadron as its host unit.




