Nonstop flight route between Southend, Essex (near London) United Kingdom and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from SEN to MER:
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- About this route
- SEN Airport Information
- MER Airport Information
- Facts about SEN
- Facts about MER
- Map of Nearest Airports to SEN
- List of Nearest Airports to SEN
- Map of Furthest Airports from SEN
- List of Furthest Airports from SEN
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
About this route:
A direct, nonstop flight between London Southend Airport (SEN), Southend, Essex (near London) United Kingdom and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 5,343 miles (or 8,599 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 London Southend Airport and Castle 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 London Southend Airport and Castle Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SEN / EGMC |
Airport Name: | London Southend Airport |
Location: | Southend, Essex (near London) United Kingdom |
GPS Coordinates: | 51°34'13"N by 0°41'35"E |
Area Served: | Southend, Essex and east London areas |
Operator/Owner: | Stobart Group |
Airport Type: | Public |
Elevation: | 55 feet (17 meters) |
# of Runways: | 1 |
View all routes: | Routes from SEN |
More Information: | SEN Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | MER / KMER |
Airport Name: | Castle Airport |
Location: | Atwater, California, United States |
GPS Coordinates: | 37°22'50"N by 120°34'5"W |
Operator/Owner: | Merced County Department of Commerce, Aviation, and Economic Development |
Airport Type: | Public |
Elevation: | 191 feet (58 meters) |
# of Runways: | 1 |
View all routes: | Routes from MER |
More Information: | MER Maps & Info |
Facts about London Southend Airport (SEN):
- Southend Airport has an excellent weather record and is used by airlines as a diversion alternative when adverse weather or incidents close other London airports.
- A four-star Holiday Inn hotel located adjacent to the airport entrance opened on 1 October 2012.
- A frequent rail service to London Liverpool Street, with a journey time of about 53 minutes, runs via Stratford from Southend Airport railway station located about 200 m from the main terminal.
- Because of London Southend Airport's relatively low elevation of 55 feet, planes can take off or land at London Southend 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.
- During the 1960s, Southend was the third-busiest airport in the United Kingdom.
- In 1967 the first steps to establish an aviation museum at the airport were taken, resulting in the official opening 26 May 1972 of the Southend Historic Aircraft Museum on the western boundary of the airport.
- The furthest airport from London Southend Airport (SEN) is Chatham Islands (CHT), which is located 11,885 miles (19,126 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- In 1946, the airfield was decommissioned from military use and civil aviation returned in 1947, as did the Southend Municipal Airport name.
- London Southend Airport handled 969,912 passengers last year.
- The closest airport to London Southend Airport (SEN) is Rochester Airport (RCS), which is located only 17 miles (28 kilometers) SSW of SEN.
- London Southend Airport (SEN) currently has only 1 runway.
- Freddie Laker's Air Charter Limited operated flights from Southend from 1949.
Facts about Castle Airport (MER):
- The airport is located at the former Castle Air Force Base which closed in 1995.
- With its central location in the San Joaquin Valley, on the route of the proposed California High-Speed Rail system, and with a large, underdeveloped site, Castle Airport has been submitted as a possible location for the central maintenance facility for the system.
- Castle Airport covers an area of 1,360 acres which contains one runway with an 11,802 x 150 ft asphalt and concrete pavement.
- Castle Airport (MER) currently has only 1 runway.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- Because of Castle Airport's relatively low elevation of 191 feet, planes can take off or land at Castle 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.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.