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

Arrival Airport:

Distance from SDY to MKY:
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- About this route
- SDY Airport Information
- MKY Airport Information
- Facts about SDY
- Facts about MKY
- 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 MKY
- List of Nearest Airports to MKY
- Map of Furthest Airports from MKY
- List of Furthest Airports from MKY
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Mackay Airport (MKY), Mackay, Queensland, Australia would travel a Great Circle distance of 8,052 miles (or 12,958 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 Mackay 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 Mackay 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: | MKY / YBMK |
Airport Name: | Mackay Airport |
Location: | Mackay, Queensland, Australia |
GPS Coordinates: | 21°10'18"S by 149°10'46"E |
Operator/Owner: | Mackay Airport Pty Ltd |
Airport Type: | Public |
Elevation: | 19 feet (6 meters) |
# of Runways: | 2 |
View all routes: | Routes from MKY |
More Information: | MKY 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.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
- Sidney-Richland Municipal Airport covers an area of 335 acres at an elevation of 1,985 feet above mean sea level.
- 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 Mackay Airport (MKY):
- Mackay Airport (MKY) has 2 runways.
- Despite the collapse of airlines Ansett Australia and Flight West Airlines in 2001, Mackay Airport has experienced considerable growth in recent years, due to the use of the airport by Virgin Australia and the expansion of QantasLink services, and handles over 620,000 passengers through the terminal per annum but that has slowed and the airport is up for sale.
- The closest airport to Mackay Airport (MKY) is Great Barrier Reef Airport (HTI), which is located 58 miles (94 kilometers) NNW of MKY.
- Mackay Airport handled 1,049,172 passengers last year.
- The furthest airport from Mackay Airport (MKY) is Agostinho Neto Airport (NTO), which is located 11,973 miles (19,269 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- In 1938, the airport held an airshow featuring ten aircraft, which attracted over 8,000 spectators.
- In November 2008, Mackay Airport was sold to a private consortium to fund the development of Mackay Hospital.
- Because of Mackay Airport's relatively low elevation of 19 feet, planes can take off or land at Mackay 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.