Nonstop flight route between Camp San Luis Obispo, California, United States and Falmouth, Massachusetts, United States:
Departure Airport:

Arrival Airport:

Distance from CSL to FMH:
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- About this route
- CSL Airport Information
- FMH Airport Information
- Facts about CSL
- Facts about FMH
- Map of Nearest Airports to CSL
- List of Nearest Airports to CSL
- Map of Furthest Airports from CSL
- List of Furthest Airports from CSL
- Map of Nearest Airports to FMH
- List of Nearest Airports to FMH
- Map of Furthest Airports from FMH
- List of Furthest Airports from FMH
About this route:
A direct, nonstop flight between O'Sullivan Army Heliport (CSL), Camp San Luis Obispo, California, United States and Otis Air National Guard Base Coast Guard Air Station Cape Cod (FMH), Falmouth, Massachusetts, United States would travel a Great Circle distance of 2,712 miles (or 4,365 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 O'Sullivan Army Heliport and Otis Air National Guard Base Coast Guard Air Station Cape Cod, 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 O'Sullivan Army Heliport and Otis Air National Guard Base Coast Guard Air Station Cape Cod. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CSL / KCSL |
Airport Name: | O'Sullivan Army Heliport |
Location: | Camp San Luis Obispo, California, United States |
GPS Coordinates: | 35°19'33"N by 120°44'35"W |
Operator/Owner: | United States Army |
Airport Type: | Military |
Elevation: | 250 feet (76 meters) |
View all routes: | Routes from CSL |
More Information: | CSL Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | FMH / KFMH |
Airport Names: |
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Location: | Falmouth, Massachusetts, United States |
GPS Coordinates: | 41°39'30"N by 70°31'17"W |
View all routes: | Routes from FMH |
More Information: | FMH Maps & Info |
Facts about O'Sullivan Army Heliport (CSL):
- Because of O'Sullivan Army Heliport's relatively low elevation of 250 feet, planes can take off or land at O'Sullivan Army Heliport 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 O'Sullivan Army Heliport (CSL) is San Luis Obispo County Regional Airport (SBP), which is located only 8 miles (14 kilometers) SE of CSL.
- The furthest airport from O'Sullivan Army Heliport (CSL) is Pierrefonds Airport (ZSE), which is located 11,442 miles (18,414 kilometers) away in Saint-Pierre, Réunion.
Facts about Otis Air National Guard Base Coast Guard Air Station Cape Cod (FMH):
- The closest airport to Otis Air National Guard Base Coast Guard Air Station Cape Cod (FMH) is Barnstable Municipal Airport (HYA), which is located only 12 miles (20 kilometers) E of FMH.
- Strategic Air Command maintained the 19th Air Refueling Squadron at Otis AFB flying the KC-97 Stratotanker.
- In the early 1970s, Otis AFB was marked for closure as part of changing priorities and a nation-wide reduction of military bases in response to cost cutting efforts as the Vietnam War was winding down.
- In addition to being known as "Otis Air National Guard Base Coast Guard Air Station Cape Cod", another name for FMH is "Otis ANGB".
- Military operations in the early years at Otis AFB included the use of petroleum products and other hazardous materials such as fuels, motor oils, and cleaning solvents and the generation of associated wastes.
- On December 22, 2006 in an agreement amongst the Coast Guard, National Guard and the Commonwealth of Massachusetts a partnership was created in which the Coast Guard would assume control of the aviation facilities from the Air Force while the Air National Guard will manage the utilities and the state will fund the emergency services and fire protection.
- The furthest airport from Otis Air National Guard Base Coast Guard Air Station Cape Cod (FMH) is Margaret River Airport (MGV), which is located 11,821 miles (19,024 kilometers) away in Margaret River, Western Australia, Australia.