Nonstop flight route between Sidney, Montana, United States and Changhai, China:
Departure Airport:

Arrival Airport:

Distance from SDY to CNI:
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- About this route
- SDY Airport Information
- CNI Airport Information
- Facts about SDY
- Facts about CNI
- 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 CNI
- List of Nearest Airports to CNI
- Map of Furthest Airports from CNI
- List of Furthest Airports from CNI
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Changhai Airport (CNI), Changhai, China would travel a Great Circle distance of 5,774 miles (or 9,293 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 Changhai 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 Changhai 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: | CNI / ZYCH |
Airport Names: |
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Location: | Changhai, China |
GPS Coordinates: | 39°15'59"N by 122°40'0"E |
Airport Type: | Public |
View all routes: | Routes from CNI |
More Information: | CNI Maps & Info |
Facts about Sidney-Richland Municipal Airport (SDY):
- 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.
- 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.
Facts about Changhai Airport (CNI):
- In addition to being known as "Changhai Airport", other names for CNI include "长海大长山岛机场" and "Zhǎnghǎi Dàzhǎngshāndǎo Jīchǎng".
- The closest airport to Changhai Airport (CNI) is Dalian Zhoushuizi International Airport (DLC), which is located 64 miles (103 kilometers) WSW of CNI.
- The furthest airport from Changhai Airport (CNI) is Miramar Airport (MJR), which is nearly antipodal to Changhai Airport (meaning Changhai Airport is almost on the exact opposite side of the Earth from Miramar Airport), and is located 12,359 miles (19,890 kilometers) away in Miramar, Buenos Aires, Argentina.