Nonstop flight route between Sidney, Montana, United States and Rottnest Island, Western Australia, Australia:
Departure Airport:

Arrival Airport:

Distance from SDY to RTS:
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- About this route
- SDY Airport Information
- RTS Airport Information
- Facts about SDY
- Facts about RTS
- 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 RTS
- List of Nearest Airports to RTS
- Map of Furthest Airports from RTS
- List of Furthest Airports from RTS
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Rottnest Airport (RTS), Rottnest Island, Western Australia, Australia would travel a Great Circle distance of 10,101 miles (or 16,256 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 Rottnest 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 Rottnest 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: | RTS / YRTI |
Airport Name: | Rottnest Airport |
Location: | Rottnest Island, Western Australia, Australia |
GPS Coordinates: | 32°0'24"S by 115°32'22"E |
Operator/Owner: | Rottnest Island Authority |
Airport Type: | Public |
Elevation: | 12 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from RTS |
More Information: | RTS 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.
- 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.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
Facts about Rottnest Airport (RTS):
- Rottnest Island Airport is a small airport for light aircraft, situated about 800 m from the main settlement at Thomson Bay, Rottnest Island and 10 nautical miles northwest of Fremantle.
- On 12 November 2006 a light twin engine charter aircraft carrying the pilot and five passengers crashed on the edge of the salt lake adjoining the airport.
- The closest airport to Rottnest Airport (RTS) is Jandakot Airport (JAD), which is located 21 miles (34 kilometers) ESE of RTS.
- Rottnest Airport (RTS) currently has only 1 runway.
- Because of Rottnest Airport's relatively low elevation of 12 feet, planes can take off or land at Rottnest 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.
- Woods Airways which was run by pioneer aviator Jimmy Woods, operated the Perth to Rottnest service from about 1948 with two war-surplus Royal Australian Air Force Avro Anson aircraft.
- The furthest airport from Rottnest Airport (RTS) is L.F. Wade International Airport (BDA), which is nearly antipodal to Rottnest Airport (meaning Rottnest Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,409 miles (19,970 kilometers) away in Ferry Reach (near Hamilton), Bermuda.