Nonstop flight route between Atwater, California, United States and Swansea, Wales, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from MER to SWS:
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- About this route
- MER Airport Information
- SWS Airport Information
- Facts about MER
- Facts about SWS
- 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 SWS
- List of Nearest Airports to SWS
- Map of Furthest Airports from SWS
- List of Furthest Airports from SWS
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Swansea Airport (SWS), Swansea, Wales, United Kingdom would travel a Great Circle distance of 5,195 miles (or 8,361 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 Swansea 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 Castle Airport and Swansea Airport. 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: | SWS / EGFH |
Airport Name: | Swansea Airport |
Location: | Swansea, Wales, United Kingdom |
GPS Coordinates: | 51°36'19"N by 4°4'4"W |
Operator/Owner: | Swansea Airport Ltd. |
Airport Type: | Public |
Elevation: | 299 feet (91 meters) |
# of Runways: | 2 |
View all routes: | Routes from SWS |
More Information: | SWS Maps & Info |
Facts about Castle Airport (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.
- 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.
- Since the mid-1940s, aircraft maintenance, fuel management, and fire training activities on the base have generated wastes that consist primarily of waste fuels, oils, solvents, and cleaners.
- 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 airport is located at the former Castle Air Force Base which closed in 1995.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- Castle Airport (MER) currently has only 1 runway.
Facts about Swansea Airport (SWS):
- The Welsh Assembly Government is currently conducting studies into improving the facilities at the airport as part of the transport infrastructure development strategy for the whole of Wales.
- The 1990s saw the arrival of Heli-air Wales to the airport, and so began the era of Helicopter Training in South Wales.
- The airport was, for a short time, the headquarters of Air Wales before they ceased all operations from the airport to focus on more popular routes from Cardiff International Airport, although before their demise, the headquarters remained in Swansea, instead at a city-centre location.
- The fire brigade at Swansea is CAT 1, and able to do CAT 2 on request.
- Swansea Airport (SWS) has 2 runways.
- Swansea Airport was built on what was originally common land during World War II.
- The furthest airport from Swansea Airport (SWS) is Dunedin International Airport (DUD), which is located 11,966 miles (19,257 kilometers) away in Dunedin, Otago, New Zealand.
- Because of Swansea Airport's relatively low elevation of 299 feet, planes can take off or land at Swansea 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 closest airport to Swansea Airport (SWS) is MoD St Athan (DGX), which is located 31 miles (49 kilometers) ESE of SWS.
- From 2008 to 2011 the airport was the base for the formation aerobatic team 'Team Osprey'.