Nonstop flight route between Atwater, California, United States and San Juan, Puerto Rico:
Departure Airport:

Arrival Airport:

Distance from MER to SJU:
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- About this route
- MER Airport Information
- SJU Airport Information
- Facts about MER
- Facts about SJU
- 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 SJU
- List of Nearest Airports to SJU
- Map of Furthest Airports from SJU
- List of Furthest Airports from SJU
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Luis Muñoz Marín International Airport (SJU), San Juan, Puerto Rico would travel a Great Circle distance of 3,525 miles (or 5,673 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 Luis Muñoz Marín International 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 Luis Muñoz Marín International 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: | SJU / TJSJ |
Airport Names: |
|
Location: | San Juan, Puerto Rico |
GPS Coordinates: | 18°26'21"N by 66°0'6"W |
Area Served: | San Juan, Puerto Rico |
Operator/Owner: | Puerto Rico Ports Authority |
Airport Type: | Public |
Elevation: | 9 feet (3 meters) |
# of Runways: | 2 |
View all routes: | Routes from SJU |
More Information: | SJU Maps & Info |
Facts about Castle Airport (MER):
- 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.
- 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 furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- 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.
- Castle Airport (MER) currently has only 1 runway.
Facts about Luis Muñoz Marín International Airport (SJU):
- The furthest airport from Luis Muñoz Marín International Airport (SJU) is Barrow Island Airport (BWB), which is nearly antipodal to Luis Muñoz Marín International Airport (meaning Luis Muñoz Marín International Airport is almost on the exact opposite side of the Earth from Barrow Island Airport), and is located 12,246 miles (19,708 kilometers) away in Barrow Island, Western Australia, Australia.
- Luis Muñoz Marín International Airport is the Island's main international gateway and its main connection to the United States.
- In addition to being known as "Luis Muñoz Marín International Airport", another name for SJU is "Aeropuerto Internacional Luis Muñoz Marín".
- The closest airport to Luis Muñoz Marín International Airport (SJU) is Fernando Luis Ribas Dominicci Airport (SIG), which is located only 6 miles (10 kilometers) W of SJU.
- Luis Muñoz Marín International Airport (SJU) has 2 runways.
- The airport opened on May 22, 1955.
- Because of Luis Muñoz Marín International Airport's relatively low elevation of 9 feet, planes can take off or land at Luis Muñoz Marín International 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.