Nonstop flight route between Atwater, California, United States and Humacao, Puerto Rico, United States:

About this route:

A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Humacao Airport (HUC), Humacao, Puerto Rico, United States would travel a Great Circle distance of 3,548 miles (or 5,709 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 Humacao 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 Humacao Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Castle Airport (MER):

• It serves one school, Sierra Academy of Aeronautics, which specializes in training foreign pilots, from the People's Republic of China.
• Castle Air Museum is 500 yards away, displaying over 50 restored World War II, Korean War, and Cold War era aircraft.
• 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.
• EPA investigations have been completed at multiple areas of contamination including landfills, discharge areas, chemical disposal areas, fire training areas, fuel spill areas, and polychlorinated biphenyl spill areas.
• 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.
• Castle Airport (MER) currently has only 1 runway.
• 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.

Facts about Humacao Airport (HUC):

• The closest airport to Humacao Airport (HUC) is Diego Jiménez Torres Airport (FAJ), which is located only 15 miles (24 kilometers) NE of HUC.
• In addition to being known as "Humacao Airport", another name for HUC is "X63".
• Humacao Airport (HUC) currently has only 1 runway.
• The furthest airport from Humacao Airport (HUC) is Barrow Island Airport (BWB), which is nearly antipodal to Humacao Airport (meaning Humacao Airport is almost on the exact opposite side of the Earth from Barrow Island Airport), and is located 12,233 miles (19,686 kilometers) away in Barrow Island, Western Australia, Australia.
• Because of Humacao Airport's relatively low elevation of 33 feet, planes can take off or land at Humacao 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.