Nonstop flight route between Sidney, Montana, United States and Da Nang, Vietnam:

About this route:

A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Đà Nẵng International Airport (DAD), Da Nang, Vietnam would travel a Great Circle distance of 7,599 miles (or 12,229 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 Đà Nẵng International 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 Đà Nẵng International Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Sidney-Richland Municipal Airport (SDY):

• 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.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• As per the Federal Aviation Administration, this airport had 2,031 passenger boardings in calendar year 2008, 2,766 in 2009, and 3,659 in 2010.
• 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 Đà Nẵng International Airport (DAD):

• The furthest airport from Đà Nẵng International Airport (DAD) is Rodríguez Ballón International Airport (AQP), which is nearly antipodal to Đà Nẵng International Airport (meaning Đà Nẵng International Airport is almost on the exact opposite side of the Earth from Rodríguez Ballón International Airport), and is located 12,412 miles (19,975 kilometers) away in Arequipa, Peru.
• In addition to being known as "Đà Nẵng International Airport", another name for DAD is "Sân bay Quốc tế Đà Nẵng".
• Situated on flat, sandy ground on the south side of the major port city of Da Nang, the area was ideal for an airfield, having unobstructed approaches to its north/south runways.
• In 1955, the newly established Republic of Vietnam Air Force inherited from the French a token force of fifty-eight aircraft.
• Đà Nẵng International Airport (DAD) has 2 runways.
• During the year 2006, Da Nang Airport counted one million passengers annually, the first time since 1975 it had reached this level.
• Because of Đà Nẵng International Airport's relatively low elevation of 33 feet, planes can take off or land at Đà Nẵng International 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 closest airport to Đà Nẵng International Airport (DAD) is Phu Bai International Airport (HUI), which is located 41 miles (66 kilometers) NW of DAD.