Nonstop flight route between Saga, Kyūshū, Japan and Sidney, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from HSG to SDY:
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- About this route
- HSG Airport Information
- SDY Airport Information
- Facts about HSG
- Facts about SDY
- 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 SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
About this route:
A direct, nonstop flight between Saga Airport (HSG), Saga, Kyūshū, Japan and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 5,912 miles (or 9,515 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 Sidney-Richland Municipal 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 Sidney-Richland Municipal 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: | SDY / KSDY |
Airport Name: | Sidney-Richland Municipal Airport |
Location: | Sidney, Montana, United States |
GPS Coordinates: | 47°42'24"N by 104°11'32"W |
Area Served: | Sidney, Montana |
Operator/Owner: | Sidney Richland Airport Authority |
Airport Type: | Public |
Elevation: | 1985 feet (605 meters) |
# of Runways: | 2 |
View all routes: | Routes from SDY |
More Information: | SDY Maps & Info |
Facts about Saga Airport (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.
- In addition to being known as "Saga Airport", other names for HSG include "佐賀空港" and "Saga-kūkō".
- Saga was a candidate destination to receive an additional pair of Haneda Airport slots in November 2013, but its bid was rejected by the government due to its existing four-daily service and its proximity to Fukuoka Airport.
- 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.
- The governor of Saga Prefecture announced the construction of Saga Airport in January 1969, and after years of studies and negotiations, construction commenced in 1997.
- The closest airport to Saga Airport (HSG) is Nagasaki Airport (NGS), which is located 28 miles (45 kilometers) SW of HSG.
- 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 Sidney-Richland Municipal Airport (SDY):
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
- The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
- The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
- Sidney-Richland Municipal Airport is a public use airport located one nautical mile west of the central business district of Sidney, a city in Richland County, Montana, United States.