Nonstop flight route between Sidney, Montana, United States and Gladstone, Queensland, Australia:
Departure Airport:

Arrival Airport:

Distance from SDY to GLT:
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- About this route
- SDY Airport Information
- GLT Airport Information
- Facts about SDY
- Facts about GLT
- Map of Nearest Airports to SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
- Map of Nearest Airports to GLT
- List of Nearest Airports to GLT
- Map of Furthest Airports from GLT
- List of Furthest Airports from GLT
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Gladstone Airport (GLT), Gladstone, Queensland, Australia would travel a Great Circle distance of 8,085 miles (or 13,012 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 Sidney-Richland Municipal Airport and Gladstone 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 Sidney-Richland Municipal Airport and Gladstone Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | GLT / YGLA |
Airport Name: | Gladstone Airport |
Location: | Gladstone, Queensland, Australia |
GPS Coordinates: | 23°52'10"S by 151°13'22"E |
Area Served: | Gladstone, Queensland, Australia |
Airport Type: | Public |
Elevation: | 59 feet (18 meters) |
# of Runways: | 1 |
View all routes: | Routes from GLT |
More Information: | GLT Maps & Info |
Facts about Sidney-Richland Municipal Airport (SDY):
- 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.
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
- 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.
Facts about Gladstone Airport (GLT):
- The closest airport to Gladstone Airport (GLT) is Rockhampton Airport (ROK), which is located 58 miles (94 kilometers) NW of GLT.
- Gladstone Airport (GLT) currently has only 1 runway.
- Because of Gladstone Airport's relatively low elevation of 59 feet, planes can take off or land at Gladstone 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 furthest airport from Gladstone Airport (GLT) is Agostinho Neto Airport (NTO), which is located 11,918 miles (19,180 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- As of March 2008, QantasLink was scheduled to operate about 38 return services per week between Gladstone and Brisbane using Dash 8 aircraft with seating from 50 to 74 passengers.
- Buses operate between the town centre and the airport, but are only operational from Monday to Friday between 6am and 6pm.