Nonstop flight route between Armidale, New South Wales, Australia and Sidney, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from ARM to SDY:
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- About this route
- ARM Airport Information
- SDY Airport Information
- Facts about ARM
- Facts about SDY
- Map of Nearest Airports to ARM
- List of Nearest Airports to ARM
- Map of Furthest Airports from ARM
- List of Furthest Airports from ARM
- 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 Armidale Airport (ARM), Armidale, New South Wales, Australia and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 8,373 miles (or 13,475 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 Armidale 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 Armidale 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: | ARM / YARM |
Airport Name: | Armidale Airport |
Location: | Armidale, New South Wales, Australia |
GPS Coordinates: | 30°31'41"S by 151°37'0"E |
Area Served: | Armidale, New South Wales, Australia |
Operator/Owner: | Armidale Dumaresq Shire |
Airport Type: | Public |
Elevation: | 3556 feet (1,084 meters) |
# of Runways: | 2 |
View all routes: | Routes from ARM |
More Information: | ARM 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 Armidale Airport (ARM):
- The airport resides at an elevation of 3,556 ft above mean sea level.
- The Armidale Dumaresq Shire Council has a number of upgrades to the airport currently in progress, with much of the funding for the works promised by Member for New England Barnaby Joyce during the 2013 Australian federal election campaign.
- A Tamworth-Armidale-Brisbane route was served by QantasLink until 2002, when the service was taken over by MacAir Airlines until January 2003, after which time it was operated by Sunshine Express Airlines before the company ceased scheduled flying in 2006.
- The furthest airport from Armidale Airport (ARM) is Santa Maria Airport (SMA), which is located 11,955 miles (19,239 kilometers) away in Santa Maria, Portugal.
- The closest airport to Armidale Airport (ARM) is Inverell Airport (IVR), which is located 52 miles (84 kilometers) NNW of ARM.
- Armidale Airport (ARM) has 2 runways.
- Hazelton Airlines, an affiliate of Ansett Australia, operated between Sydney and Armidale from 1989 until the company collapsed in 2002.
- Armidale was one of the 20 destinations looked at by Virgin Australia for services to Sydney using Embraer jet aircraft.
Facts about Sidney-Richland Municipal Airport (SDY):
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
- 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.
- 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.