Nonstop flight route between London, England, United Kingdom and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from LHR to MER:
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- About this route
- LHR Airport Information
- MER Airport Information
- Facts about LHR
- Facts about MER
- Map of Nearest Airports to LHR
- List of Nearest Airports to LHR
- Map of Furthest Airports from LHR
- List of Furthest Airports from LHR
- 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 Heathrow Airport (LHR), London, England, United Kingdom and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 5,313 miles (or 8,550 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 Heathrow 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 Heathrow 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: | LHR / EGLL |
Airport Name: | London Heathrow Airport |
Location: | London, England, United Kingdom |
GPS Coordinates: | 51°28'38"N by 0°27'41"W |
Area Served: | London, United Kingdom |
Operator/Owner: | Heathrow Airport Holdings |
Airport Type: | Public |
Elevation: | 83 feet (25 meters) |
# of Runways: | 2 |
View all routes: | Routes from LHR |
More Information: | LHR 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 Heathrow Airport (LHR):
- Heathrow Airport has Anglican, Catholic, free church, Hindu, Jewish, Muslim and Sikh chaplains.
- Because of London Heathrow Airport's relatively low elevation of 83 feet, planes can take off or land at London Heathrow 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 airport has been criticised in recent years for overcrowding and delays.
- Heathrow lies 12 nautical miles west of Central London, and has two parallel east–west runways along with five terminals on a site that covers 12.14 square kilometres.
- London Heathrow Airport (LHR) has 2 runways.
- London Heathrow Airport or Heathrow is a major international airport serving London, England, known as London Airport from 1946 until 1965.
- The closest airport to London Heathrow Airport (LHR) is RAF Northolt (NHT), which is located only 6 miles (9 kilometers) NNE of LHR.
- The furthest airport from London Heathrow Airport (LHR) is Chatham Islands (CHT), which is located 11,875 miles (19,112 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Until 2008, air traffic between Heathrow and the United States was strictly governed by the countries' bilateral Bermuda II treaty.
- Heathrow is 14 mi west of central London, near the south end of the London Borough of Hillingdon on a parcel of land that is designated part of the Metropolitan Green Belt.
- Heathrow Airport started in 1929 as a small airfield on land south-east of the hamlet of Heathrow from which the airport takes its name.
Facts about Castle Airport (MER):
- 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.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- The airport is located at the former Castle Air Force Base which closed in 1995.
- The EPA currently has this base listed on their database due to the bulk wastes such as solvents, oils, fuels, and sludges which were disposed in pits at landfills around the base until 1977.
- Castle Airport (MER) currently has only 1 runway.
- 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.