Nonstop flight route between Camp San Luis Obispo, California, United States and Derry, Northern Ireland, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from CSL to LDY:
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- About this route
- CSL Airport Information
- LDY Airport Information
- Facts about CSL
- Facts about LDY
- 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 LDY
- List of Nearest Airports to LDY
- Map of Furthest Airports from LDY
- List of Furthest Airports from LDY
About this route:
A direct, nonstop flight between O'Sullivan Army Heliport (CSL), Camp San Luis Obispo, California, United States and City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom would travel a Great Circle distance of 5,066 miles (or 8,154 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 City of Derry 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 O'Sullivan Army Heliport and City of Derry Airport. 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: | LDY / EGAE |
Airport Names: |
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Location: | Derry, Northern Ireland, United Kingdom |
GPS Coordinates: | 55°2'34"N by 7°9'42"W |
Area Served: | Derry, United Kingdom |
Operator/Owner: | Derry City Council |
Airport Type: | Public |
Elevation: | 23 feet (7 meters) |
# of Runways: | 1 |
View all routes: | Routes from LDY |
More Information: | LDY Maps & Info |
Facts about O'Sullivan Army Heliport (CSL):
- 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.
- 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.
Facts about City of Derry Airport (LDY):
- The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of LDY.
- Ryanair also discontinued the Bristol route and changed its Derry–East Midlands route to Derry–Birmingham announcing new flights to London Luton and the airport's first scheduled international service to Alicante which commenced in June 2009.
- The Belfast to Derry single track railway line of Northern Ireland Railways passes close to but not across the tip of the runway at the North Eastern end.
- City of Derry Airport (LDY) currently has only 1 runway.
- The furthest airport from City of Derry Airport (LDY) is Ryan's Creek Aerodrome (SZS), which is located 11,838 miles (19,051 kilometers) away in Stewart Island, New Zealand.
- Eglinton Aerodrome, as it is known locally, has a CAA Ordinary Licence that allows flights for the public transport of passengers or for flying instruction as authorised by the licensee.
- Aer Arann operated services to Manchester and Birmingham for a short time.
- Because of City of Derry Airport's relatively low elevation of 23 feet, planes can take off or land at City of Derry 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.
- In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
- City of Derry Airport handled 384,973 passengers last year.