Nonstop flight route between Camp San Luis Obispo, California, United States and Washington, D.C. / Virginia, United States:
Departure Airport:

Arrival Airport:

Distance from CSL to IAD:
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- About this route
- CSL Airport Information
- IAD Airport Information
- Facts about CSL
- Facts about IAD
- 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 IAD
- List of Nearest Airports to IAD
- Map of Furthest Airports from IAD
- List of Furthest Airports from IAD
About this route:
A direct, nonstop flight between O'Sullivan Army Heliport (CSL), Camp San Luis Obispo, California, United States and Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States would travel a Great Circle distance of 2,375 miles (or 3,822 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 O'Sullivan Army Heliport and Washington Dulles International Airport, the route shown on this map most likely still appears to be a straight line.
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: | IAD / KIAD |
Airport Name: | Washington Dulles International Airport |
Location: | Washington, D.C. / Virginia, United States |
GPS Coordinates: | 38°56'39"N by 77°27'20"W |
Area Served: | Washington metropolitan area |
Airport Type: | Public |
Elevation: | 313 feet (95 meters) |
# of Runways: | 5 |
View all routes: | Routes from IAD |
More Information: | IAD Maps & Info |
Facts about O'Sullivan Army Heliport (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.
- 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.
Facts about Washington Dulles International Airport (IAD):
- Washington Dulles International Airport (IAD) has 5 runways.
- The furthest airport from Washington Dulles International Airport (IAD) is Margaret River Airport (MGV), which is located 11,659 miles (18,763 kilometers) away in Margaret River, Western Australia, Australia.
- Fairfax Connector service to Dulles is through via route 981.
- United Airlines maintains one of two East Coast hubs at Dulles which handled 56.7% of scheduled air carrier passengers at the airport.JetBlue handled 6.8% of scheduled air carrier passengers.
- The closest airport to Washington Dulles International Airport (IAD) is Leesburg Executive Airport (JYO), which is located only 11 miles (17 kilometers) NNW of IAD.
- Because of Washington Dulles International Airport's relatively low elevation of 313 feet, planes can take off or land at Washington Dulles International 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.
- By the 1980s, the original design, which had mobile lounges meet each plane, was no longer well-suited to Dulles' role as a hub airport.
- The main terminal was extended in 1996 to 1,240 feet —Saarinen's original design length—which was slightly more than double its originally constructed length of 600 feet.
- The C and D concourses, completed in 1983 and designed by Hellmuth, Obata and Kassabaum, were originally designed as a temporary base for United Airlines, which began hub operations at the airport in 1985.