Nonstop flight route between St Athan, Wales, United Kingdom and Umiat, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from DGX to UMT:
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- About this route
- DGX Airport Information
- UMT Airport Information
- Facts about DGX
- Facts about UMT
- Map of Nearest Airports to DGX
- List of Nearest Airports to DGX
- Map of Furthest Airports from DGX
- List of Furthest Airports from DGX
- Map of Nearest Airports to UMT
- List of Nearest Airports to UMT
- Map of Furthest Airports from UMT
- List of Furthest Airports from UMT
About this route:
A direct, nonstop flight between MoD St Athan (DGX), St Athan, Wales, United Kingdom and Umiat Airport (UMT), Umiat, Alaska, United States would travel a Great Circle distance of 3,943 miles (or 6,345 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 MoD St Athan and Umiat 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 MoD St Athan and Umiat Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | UMT / PAUM |
Airport Name: | Umiat Airport |
Location: | Umiat, Alaska, United States |
GPS Coordinates: | 69°22'15"N by 152°8'5"W |
Area Served: | Umiat, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Northern Region |
Airport Type: | Public |
Elevation: | 267 feet (81 meters) |
# of Runways: | 1 |
View all routes: | Routes from UMT |
More Information: | UMT Maps & Info |
Facts about MoD St Athan (DGX):
- MoD St Athan (DGX) currently has only 1 runway.
- On 26 August 1993 an ATC civilian instructor was seriously injured and the RAF Volunteer Reserve pilot, Group Captain Roger Sweatman, was killed when their Chipmunk trainer, on an air experience flight, crashed after encountering difficulties during a simulated emergency low-height manoeuvre on take-off.
- 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.
- 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.
- 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.
- The station officially opened as RAF St Athan on 1 September 1938 and the first unit to take up residence was No 4 School of Technical Training.
- The closest airport to MoD St Athan (DGX) is Cardiff Airport (CWL), which is located only 4 miles (6 kilometers) E of DGX.
- 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 last aircraft to be serviced at St Athan, a Vickers VC10, departed the site on 23 February 2012.
Facts about Umiat Airport (UMT):
- The closest airport to Umiat Airport (UMT) is Nuiqsut Airport (NUI), which is located 64 miles (103 kilometers) NNE of UMT.
- The furthest airport from Umiat Airport (UMT) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,143 miles (16,324 kilometers) away in Villa Las Estrellas, Antarctica.
- Umiat Airport (UMT) currently has only 1 runway.
- Because of Umiat Airport's relatively low elevation of 267 feet, planes can take off or land at Umiat 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.