Nonstop flight route between Helena, Montana, United States and Ruislip, England, United Kingdom:

About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and RAF Northolt (NHT), Ruislip, England, United Kingdom would travel a Great Circle distance of 4,537 miles (or 7,301 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 Helena Regional Airport and RAF Northolt, 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 Helena Regional Airport and RAF Northolt. 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 Helena Regional Airport (HLN):

• Helena Regional Airport (HLN) has 3 runways.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• Helena Regional Airport is a public airport two miles northeast of Helena, in Lewis and Clark County, Montana.
• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
• The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.
• The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.

Facts about RAF Northolt (NHT):

• Starting in 1946 the airfield was used by civil aviation during the construction of nearby Heathrow Airport.
• Following Louis Blériot's first flight across the English Channel in 1909, the British Army considered the necessity of defending the United Kingdom from a future air attack.
• Thirty Allied airmen including servicemen from Belgium, Canada, Czechoslovakia, New Zealand, Poland and the United Kingdom were killed flying from RAF Northolt during the Battle of Britain, of whom ten were Polish.
• The closest airport to RAF Northolt (NHT) is London Heathrow Airport (LHR), which is located only 6 miles (9 kilometers) SSW of NHT.
• On 1 June 1960, an Avro Anson aircraft suffered engine failure soon after take-off from Northolt and crash-landed on top of the nearby Express Dairies plant in South Ruislip.
• In 1943, the station became the first to fly sorties using Supermarine Spitfire Mk IXs in German airspace in support of bomber operations.
• The furthest airport from RAF Northolt (NHT) is Chatham Islands (CHT), which is located 11,871 miles (19,105 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• In January 2012, it was reported that the future of station was under review by the Ministry of Defence as part of efforts to reduce defence spending.