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

Arrival Airport:

Distance from IPT to MER:
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- About this route
- IPT Airport Information
- MER Airport Information
- Facts about IPT
- Facts about MER
- Map of Nearest Airports to IPT
- List of Nearest Airports to IPT
- Map of Furthest Airports from IPT
- List of Furthest Airports from IPT
- 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 Williamsport Regional Airport (IPT), Williamsport, Pennsylvania, United States and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 2,324 miles (or 3,740 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 Williamsport Regional 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: | IPT / KIPT |
Airport Name: | Williamsport Regional Airport |
Location: | Williamsport, Pennsylvania, United States |
GPS Coordinates: | 41°14'30"N by 76°55'18"W |
Area Served: | Williamsport, Pennsylvania |
Operator/Owner: | Williamsport Municipal Airport Authority |
Airport Type: | Public |
Elevation: | 528 feet (161 meters) |
# of Runways: | 2 |
View all routes: | Routes from IPT |
More Information: | IPT 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 Williamsport Regional Airport (IPT):
- Williamsport Regional Airport (IPT) has 2 runways.
- Because of Williamsport Regional Airport's relatively low elevation of 528 feet, planes can take off or land at Williamsport Regional 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 Williamsport Municipal Airport Authority announced the terminal will be replaced with a building twice the size.
- The closest airport to Williamsport Regional Airport (IPT) is William T. Piper Memorial Airport (LHV), which is located 27 miles (44 kilometers) WSW of IPT.
- The furthest airport from Williamsport Regional Airport (IPT) is Margaret River Airport (MGV), which is located 11,608 miles (18,682 kilometers) away in Margaret River, Western Australia, Australia.
- The Williamsport Regional Association of Pilots holds a Fly-In every June.
Facts about Castle Airport (MER):
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- 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.
- 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.
- 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.
- The EPA currently has this base listed on their database due to the bulk wastes such as solvents, oils, fuels, and sludges which were disposed in pits at landfills around the base until 1977.
- 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.