Nonstop flight route between High Wycombe, Buckinghamshire, England, United Kingdom and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between RAF High Wycombe (HYC), High Wycombe, Buckinghamshire, England, United Kingdom and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 4,220 miles (or 6,791 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 RAF High Wycombe 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 RAF High Wycombe 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:

Arrival Airport Information:

Facts about RAF High Wycombe (HYC):

• To preserve secrecy, the station was known as "Southdown" in March 1940, as part of a directive by the Air Ministry.
• During the Second World War High Wycombe was used by the United States Army Air Forces.
• Operationally during the Cold War the Director UKWMO would have been located at the United Kingdom Regional Air Operations Command within Strike Command's Operations Centre nuclear bunker at RAF High Wycombe to instigate the national Four minute air raid warnings, with the Deputy Director located at a standby UK RAOC, described at the time as being "elsewhere in the UK", but has since been revealed as being at Goosnargh near Preston within the UKWMO Western Sector nuclear bunker.
• RAF High Wycombe is situated roughly three miles from the town of High Wycombe over three sites - No 1 Site houses the Command HQ and the Combined Air Operations Centre, No 2 Site houses the officers' mess, while No 3 site is the domestic site, airmen and NCO's quarters, MT yard, PT flight and Supply Flight.
• The closest airport to RAF High Wycombe (HYC) is RAF Benson (BEX), which is located only 13 miles (22 kilometers) WSW of HYC.
• The furthest airport from RAF High Wycombe (HYC) is Dunedin International Airport (DUD), which is located 11,867 miles (19,098 kilometers) away in Dunedin, Otago, New Zealand.

Facts about Sidney-Richland Municipal Airport (SDY):

• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• 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 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.