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):
- In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".
- 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.
- 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.
- On 3 November 1967, the Department of Defense revealed that GFAFB was one of 10 initial locations to host a Sentinel Anti-Ballistic Missile site.
- With the restructuring of the Air Force and the disestablishment of SAC in 1992, the wing transferred to Air Combat Command, then came under Air Force Space Command in 1993.
- Grand Forks Air Force Base is a United States Air Force installation in northeastern North Dakota, located north of Emerado and 16 miles west of Grand Forks.
- SAGE operations were extremely expansive and GFADS was inactivated on 1 December 1963, when it was merged with the Minot Air Defense Sector at Minot AFB to the west.
- On 3 September 1974, the SAFSCOM Site Activation Team was relieved by the U.S.
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.
- 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.
- The closest airport to Chatham Seaplane Base (CYM) is Angoon Seaplane Base (AGN), which is located only 13 miles (22 kilometers) E of CYM.