Nonstop flight route between Saga, Kyūshū, Japan and Atwater, California, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from HSG to MER:
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- About this route
- HSG Airport Information
- MER Airport Information
- Facts about HSG
- Facts about MER
- Map of Nearest Airports to HSG
- List of Nearest Airports to HSG
- Map of Furthest Airports from HSG
- List of Furthest Airports from HSG
- 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 Saga Airport (HSG), Saga, Kyūshū, Japan and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 5,766 miles (or 9,280 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 Saga Airport and Castle 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 Saga Airport and Castle Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | HSG / RJFS | 
| Airport Names: | 
 | 
| Location: | Saga, Kyūshū, Japan | 
| GPS Coordinates: | 33°8'58"N by 130°18'7"E | 
| Area Served: | Fukuoka–Kitakyushu metropolitan area | 
| Operator/Owner: | Saga Prefecture | 
| Airport Type: | Public | 
| Elevation: | 6 feet (2 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from HSG | 
| More Information: | HSG 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 Saga Airport (HSG):
- The closest airport to Saga Airport (HSG) is Nagasaki Airport (NGS), which is located 28 miles (45 kilometers) SW of HSG.
- Saga Airport (HSG) currently has only 1 runway.
- The furthest airport from Saga Airport (HSG) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Saga Airport (meaning Saga Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,275 miles (19,755 kilometers) away in Rio Grande, Brazil.
- Because of Saga Airport's relatively low elevation of 6 feet, planes can take off or land at Saga 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 addition to being known as "Saga Airport", other names for HSG include "佐賀空港" and "Saga-kūkō".
- The airport accommodated 313,200 outbound domestic passengers in 2012.
- Due to the slump in mainline service to the airport, Saga Prefecture began several programs aimed at promoting usage of the airport, including ground transportation subsidies for local companies that used the airport for business travel.
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.
- 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 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.
- 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.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.




