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

About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and Plymouth City Airport (PLH), Plymouth, United Kingdom would travel a Great Circle distance of 4,478 miles (or 7,206 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 Plymouth City 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 Helena Regional Airport and Plymouth City 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 Helena Regional Airport (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.
• Helena Regional Airport (HLN) has 3 runways.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.

Facts about Plymouth City Airport (PLH):

• The airport closed and ceased all operations on 23 December 2011.
• The closest airport to Plymouth City Airport (PLH) is Exeter International Airport (EXT), which is located 37 miles (60 kilometers) NE of PLH.
• The furthest airport from Plymouth City Airport (PLH) is Dunedin International Airport (DUD), which is nearly antipodal to Plymouth City Airport (meaning Plymouth City Airport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,030 miles (19,361 kilometers) away in Dunedin, Otago, New Zealand.
• Plymouth City Airport had a CAA Public Use Aerodrome Licence that allowed flights for the public transport of passengers or for flying instruction.
• Plymouth City Airport (PLH) currently has only 1 runway.
• Plymouth City Airport handled 157,933 passengers last year.
• On 28 July 2011, the last commercial passenger flights operated from the airport.
• Because of Plymouth City Airport's relatively low elevation of 476 feet, planes can take off or land at Plymouth City 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.
• Air Southwest had its management head office at the airport, but announced that 12 jobs would be lost and its Plymouth office would close, moving instead to Humberside Airport, which is the main operations base for Eastern Airways.