Nonstop flight route between Adelaide, South Australia, Australia and Helena, Montana, United States:

About this route:

A direct, nonstop flight between Adelaide Airport (ADL), Adelaide, South Australia, Australia and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 8,786 miles (or 14,140 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 Adelaide Airport and Helena Regional 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 Adelaide Airport and Helena Regional 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 Adelaide Airport (ADL):

• The new terminal was opened on 7 October 2005 by the Prime Minister John Howard and South Australian Premier Mike Rann.
• The old international terminal had only one terminal with limited stores for passengers.
• Adelaide Airport (ADL) has 2 runways.
• On 5 August 2008 Tiger Airways Australia confirmed that Adelaide Airport would become the airline's second hub which would base two of the airline's Airbus A320s by early 2009.
• As of 2011 a series of developments are either underway, approved or proposed for Adelaide Airport.
• The closest airport to Adelaide Airport (ADL) is Kingscote Airport (KGC), which is located 78 miles (125 kilometers) SW of ADL.
• The furthest airport from Adelaide Airport (ADL) is Flores Airport (FLW), which is located 11,789 miles (18,972 kilometers) away in Flores Island, Azores, Portugal.
• Adelaide Airport handled 7,337,000 passengers last year.
• Because of Adelaide Airport's relatively low elevation of 20 feet, planes can take off or land at Adelaide 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.

Facts about Helena Regional Airport (HLN):

• 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.
• 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.