Nonstop flight route between Grand Forks, North Dakota, United States and Chatham, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from RDR to CYM:
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- About this route
- RDR Airport Information
- CYM Airport Information
- Facts about RDR
- Facts about CYM
- Map of Nearest Airports to RDR
- List of Nearest Airports to RDR
- Map of Furthest Airports from RDR
- List of Furthest Airports from RDR
- Map of Nearest Airports to CYM
- List of Nearest Airports to CYM
- Map of Furthest Airports from CYM
- List of Furthest Airports from CYM
About this route:
A direct, nonstop flight between Grand Forks Air Force Base (RDR), Grand Forks, North Dakota, United States and Chatham Seaplane Base (CYM), Chatham, Alaska, United States would travel a Great Circle distance of 1,677 miles (or 2,698 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 Grand Forks Air Force Base and Chatham Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | RDR / KRDR |
Airport Names: |
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Location: | Grand Forks, North Dakota, United States |
GPS Coordinates: | 47°57'39"N by 97°24'3"W |
View all routes: | Routes from RDR |
More Information: | RDR Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CYM / |
Airport Name: | Chatham Seaplane Base |
Location: | Chatham, Alaska, United States |
GPS Coordinates: | 57°30'54"N by 134°56'45"W |
Area Served: | Chatham, Alaska |
Operator/Owner: | Chatham Cannery Ltd. |
Airport Type: | Public use |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from CYM |
More Information: | CYM Maps & Info |
Facts about Grand Forks Air Force Base (RDR):
- The furthest airport from Grand Forks Air Force Base (RDR) is Margaret River Airport (MGV), which is located 10,504 miles (16,904 kilometers) away in Margaret River, Western Australia, Australia.
- On 26 May 1972, President Nixon and Soviet general secretary Leonid Brezhnev signed the ABM Treaty, which limited each nation to one site to protect strategic forces and one site to protect the "National Command Authority." With work about 85 percent complete at Grand Forks, the United States chose to finish construction at the North Dakota site.
- On 18 February 1957, the 478th Fighter Group was activated at Grand Forks.
- On 1 November 1964, 321st Strategic Missile Wing was organized as the Minuteman II intercontinental ballistic missile wing at GFAFB, the first in SAC.
- In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".
- The closest airport to Grand Forks Air Force Base (RDR) is Grand Forks International Airport (GFK), which is located only 10 miles (17 kilometers) E of RDR.
Facts about Chatham Seaplane Base (CYM):
- Chatham Seaplane Base (CYM) currently has only 1 runway.
- The furthest airport from Chatham Seaplane Base (CYM) is Port Alfred Airport (AFD), which is located 10,576 miles (17,020 kilometers) away in Port Alfred, South Africa.
- The closest airport to Chatham Seaplane Base (CYM) is Angoon Seaplane Base (AGN), which is located only 13 miles (22 kilometers) E of CYM.
- Because of Chatham Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Chatham 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.