Nonstop flight route between Atwater, California, United States and Tucson, Arizona, United States:
Departure Airport:

Arrival Airport:

Distance from MER to TUS:
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- About this route
- MER Airport Information
- TUS Airport Information
- Facts about MER
- Facts about TUS
- 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 TUS
- List of Nearest Airports to TUS
- Map of Furthest Airports from TUS
- List of Furthest Airports from TUS
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Tucson International Airport (TUS), Tucson, Arizona, United States would travel a Great Circle distance of 656 miles (or 1,056 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 Castle Airport and Tucson International Airport, the route shown on this map most likely still appears to be a straight line.
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: | TUS / KTUS |
Airport Name: | Tucson International Airport |
Location: | Tucson, Arizona, United States |
GPS Coordinates: | 32°6'57"N by 110°56'27"W |
Area Served: | Tucson, Arizona |
Operator/Owner: | City of Tucson |
Airport Type: | Public |
Elevation: | 2643 feet (806 meters) |
# of Runways: | 3 |
View all routes: | Routes from TUS |
More Information: | TUS 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.
- 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.
- 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.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- Castle Air Museum is 500 yards away, displaying over 50 restored World War II, Korean War, and Cold War era aircraft.
Facts about Tucson International Airport (TUS):
- There has been a propensity in local Tucson / Pima County area news media outlets and other business and governmental entities in the Tucson metropolitan area outside of the professional aviation community to refer to the airport as "TIA" versus the airport's actual airport code of "TUS" in either reporting or reference.
- The wing also hosts the Air National Guard / Air Force Reserve Command Command Test Center as a tenant unit, which conducts operational testing on behalf of the Air Reserve Component.
- Tucson International Airport (TUS) has 3 runways.
- Tucson International Airport handled 1,779,679 passengers last year.
- The closest airport to Tucson International Airport (TUS) is Davis–Monthan Air Force Base (DMA), which is located only 5 miles (8 kilometers) NE of TUS.
- The furthest airport from Tucson International Airport (TUS) is Sir Gaëtan Duval Airport (RRG), which is located 11,513 miles (18,528 kilometers) away in Rodrigues Island, Mauritius.
- On November 15, 1963 a new terminal designed by Terry Atkinson opened with an international inspection station.
- The airport covers 7,938 acres at an elevation of 2,643 feet above sea level.