Nonstop flight route between Rapid City, South Dakota, United States and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 252 miles (or 405 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 relatively short distance between Ellsworth Air Force Base and Sidney-Richland Municipal Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Ellsworth Air Force Base (RCA):

• Shortly after additional runway improvements, in July 1949, the 28 BMW began conversion from B-29s to the huge B-36 Peacemaker.
• The furthest airport from Ellsworth Air Force Base (RCA) is Sir Gaëtan Duval Airport (RRG), which is located 10,579 miles (17,026 kilometers) away in Rodrigues Island, Mauritius.
• In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
• Air Defense Command activated the 740th Aircraft Control and Warning Squadron at Rapid City AFB on 1 February 1953 under the ADC 31st Air Division.
• The closest airport to Ellsworth Air Force Base (RCA) is Rapid City Regional Airport (RAP), which is located only 7 miles (11 kilometers) S of RCA.
• An Army Air-Defense Command Post was established at Ellsworth in 1960 for Nike missile command-and-control functions.
• The 44th Missile Wing, however, had ably accomplished its deterrence mission.
• The installation changed names a few more times during its early years.
• In March 1944, heavy bomber operational training ended and the 225th Army Air Force Base Unit began training of replacement personnel for deployed heavy bombardment units in the overseas combat theaters.

Facts about Sidney-Richland Municipal Airport (SDY):

• Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
• 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.