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

Arrival Airport:

Distance from MER to HTF:
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- About this route
- MER Airport Information
- HTF Airport Information
- Facts about MER
- Facts about HTF
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
- Map of Nearest Airports to HTF
- List of Nearest Airports to HTF
- Map of Furthest Airports from HTF
- List of Furthest Airports from HTF
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Hatfield Aerodrome (HTF), Hatfield, Hertfordshire, England, United Kingdom would travel a Great Circle distance of 5,305 miles (or 8,538 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 Castle Airport and Hatfield Aerodrome, 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 Castle Airport and Hatfield Aerodrome. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | HTF / EGTH |
Airport Name: | Hatfield Aerodrome |
Location: | Hatfield, Hertfordshire, England, United Kingdom |
GPS Coordinates: | 51°45'56"N by 0°15'2"W |
Operator/Owner: | de Havilland Aircraft Company (1930 - 1960) Hawker Siddeley (1960 - 1977) British Aerospace (1977 - closure) |
Airport Type: | Private |
Elevation: | 254 feet (77 meters) |
# of Runways: | 2 |
View all routes: | Routes from HTF |
More Information: | HTF Maps & Info |
Facts about Castle Airport (MER):
- Castle Airport (MER) currently has only 1 runway.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- 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.
- It serves one school, Sierra Academy of Aeronautics, which specializes in training foreign pilots, from the People's Republic of China.
- 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.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- It was estimated that the cost to relocate the 129 RQW to Castle, to include associated military construction costs, could be recouped in seven years.
Facts about Hatfield Aerodrome (HTF):
- Because of Hatfield Aerodrome's relatively low elevation of 254 feet, planes can take off or land at Hatfield Aerodrome 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.
- Hatfield Aerodrome (HTF) has 2 runways.
- The redevelopment of the main airfield site commenced in the late 1990s.
- The furthest airport from Hatfield Aerodrome (HTF) is Chatham Islands (CHT), which is located 11,860 miles (19,086 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- The ICAO code, EGTH, has subsequently been reallocated to Old Warden Aerodrome in Bedfordshire.
- The de Havilland Aircraft Company was acquired by Hawker Siddeley in 1960 and the de Havilland name ceased to be used in 1963.
- The closest airport to Hatfield Aerodrome (HTF) is London Luton Airport (LTN), which is located only 9 miles (15 kilometers) NNW of HTF.
- The 146 first flew in 1981 and production of some components, final assembly and flight testing of the first two series of the aircraft was based at Hatfield during the early and mid 1980s.
- In 1992, due to severe financial problems, British Aerospace announced the cessation of aircraft production at Hatfield from 1993.