Nonstop flight route between Harrisburg, Pennsylvania, United States and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from MDT to MER:
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- About this route
- MDT Airport Information
- MER Airport Information
- Facts about MDT
- Facts about MER
- Map of Nearest Airports to MDT
- List of Nearest Airports to MDT
- Map of Furthest Airports from MDT
- List of Furthest Airports from MDT
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
About this route:
A direct, nonstop flight between Harrisburg International Airport (MDT), Harrisburg, Pennsylvania, United States and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 2,343 miles (or 3,771 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 relatively short distance between Harrisburg International Airport and Castle Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | MDT / KMDT |
Airport Name: | Harrisburg International Airport |
Location: | Harrisburg, Pennsylvania, United States |
GPS Coordinates: | 40°11'35"N by 76°45'47"W |
Area Served: | Harrisburg, Pennsylvania |
Airport Type: | Public |
Elevation: | 310 feet (94 meters) |
# of Runways: | 1 |
View all routes: | Routes from MDT |
More Information: | MDT Maps & Info |
Arrival 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 |
Facts about Harrisburg International Airport (MDT):
- The terminal has 12 gates and is a pier finger lay out near the middle of the airfield, almost parallel to the runway.
- The closest airport to Harrisburg International Airport (MDT) is Capital City Airport (HAR), which is located only 5 miles (8 kilometers) WNW of MDT.
- The Middletown Air Depot at Olmsted provided logistical and maintenance support of military aircraft until it closed in 1969.
- About 1,400 people work in the system of Harrisburg International Airport.
- The furthest airport from Harrisburg International Airport (MDT) is Margaret River Airport (MGV), which is located 11,654 miles (18,755 kilometers) away in Margaret River, Western Australia, Australia.
- Built in 2004, and attached to the new terminal building via a climate-controlled sky bridge, the Multi-Modal Transportation Facility is a four-story facility that handles all ground transportation.
- Route 7 of the Capital Area Transit System runs to downtown Harrisburg and surrounding communities.
- Because of Harrisburg International Airport's relatively low elevation of 310 feet, planes can take off or land at Harrisburg 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.
- Harrisburg International Airport covers 680 acres at an elevation of 310 feet above mean sea level.
- Harrisburg International Airport (MDT) currently has only 1 runway.
Facts about Castle Airport (MER):
- Castle Airport covers an area of 1,360 acres which contains one runway with an 11,802 x 150 ft asphalt and concrete pavement.
- 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.
- The airport is located at the former Castle Air Force Base which closed in 1995.
- 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.
- In 2004, recommendations were made to relocate the 129th Rescue Wing of the California Air National Guard and its associated HC-130, MC-130 and HH-60 aircraft from Moffett Federal Airfield to the former Castle Air Force Base, now Castle Airport.
- Castle Airport (MER) currently has only 1 runway.