Nonstop flight route between Half Moon Bay, California, United States and St Athan, Wales, United Kingdom:
Departure Airport:
Arrival Airport:
Distance from HAF to DGX:
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- About this route
 - HAF Airport Information
 - DGX Airport Information
 - Facts about HAF
 - Facts about DGX
 - Map of Nearest Airports to HAF
 - List of Nearest Airports to HAF
 - Map of Furthest Airports from HAF
 - List of Furthest Airports from HAF
 - Map of Nearest Airports to DGX
 - List of Nearest Airports to DGX
 - Map of Furthest Airports from DGX
 - List of Furthest Airports from DGX
 
About this route:
A direct, nonstop flight between Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF), Half Moon Bay, California, United States and MoD St Athan (DGX), St Athan, Wales, United Kingdom would travel a Great Circle distance of 5,277 miles (or 8,493 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 Half Moon Bay AirportHalf Moon Bay Flight Strip and MoD St Athan, 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 Half Moon Bay AirportHalf Moon Bay Flight Strip and MoD St Athan. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | HAF / KHAF | 
| Airport Name: | Half Moon Bay AirportHalf Moon Bay Flight Strip | 
| Location: | Half Moon Bay, California, United States | 
| GPS Coordinates: | 37°30'47"N by 122°30'3"W | 
| Operator/Owner: | San Mateo County | 
| Airport Type: | Public | 
| Elevation: | 66 feet (20 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from HAF | 
| More Information: | HAF Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | DGX / EGDX | 
| Airport Name: | MoD St Athan | 
| Location: | St Athan, Wales, United Kingdom | 
| GPS Coordinates: | 51°24'16"N by 3°26'8"W | 
| Operator/Owner: | Ministry of Defence | 
| Airport Type: | Military | 
| Elevation: | 163 feet (50 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from DGX | 
| More Information: | DGX Maps & Info | 
Facts about Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF):
- Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF) currently has only 1 runway.
 - Because of Half Moon Bay AirportHalf Moon Bay Flight Strip's relatively low elevation of 66 feet, planes can take off or land at Half Moon Bay AirportHalf Moon Bay Flight Strip 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.
 - Half Moon Bay Airport covers an area of 325 acres at an elevation of 66 feet above mean sea level.
 - On 1 June 1945, the War Department issued a five year permit to the U.S.
 - The closest airport to Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF) is San Francisco International Airport (SFO), which is located only 10 miles (16 kilometers) NE of HAF.
 - The furthest airport from Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF) is Tôlanaro Airport (FTU), which is located 11,375 miles (18,307 kilometers) away in Tôlanaro, Madagascar.
 
Facts about MoD St Athan (DGX):
- MoD St Athan (DGX) currently has only 1 runway.
 - In 2009 building work was due to commence on a new defence training academy with its heart at St Athan.
 - Because of MoD St Athan's relatively low elevation of 163 feet, planes can take off or land at MoD St Athan 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.
 - Just before 1100 GMT on 11 February 2009, two Grob Tutor aircraft flying out of St Athan were involved in a mid-air collision in which two Air Training Corps cadets and their instructors, both RAF pilots, died.
 - The furthest airport from MoD St Athan (DGX) is Dunedin International Airport (DUD), which is located 11,960 miles (19,248 kilometers) away in Dunedin, Otago, New Zealand.
 - In March 2003 it was confirmed that a new hi-tech maintenance centre would be built, creating 3,300 jobs.
 - The MOD later decided that DARA's 'Fast Jets' and 'Engines' businesses would close by April 2007, although the 'Large Aircraft' business would continue and, on 14 April 2005, the Project Red Dragon super-hangar opened and DARA moved its VC10 operations from its existing 'Twin Peaks' hangar into the new facility.
 - The MOD continued to negotiate the project with the Metrix Consortium, but the price rose several times, reaching £14 billion in mid-2009.
 - The closest airport to MoD St Athan (DGX) is Cardiff Airport (CWL), which is located only 4 miles (6 kilometers) E of DGX.
 - During the 1960s, a driving school was established.
 
