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 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.
• The closest airport to Adelaide Airport (ADL) is Kingscote Airport (KGC), which is located 78 miles (125 kilometers) SW of ADL.
• Adelaide Metro operates several JetBus buses connecting the airport to various locations in Adelaide.
• First established in 1955, a new dual international/domestic terminal was opened in 2005 which has received numerous awards, including being named the world's second-best international airport in 2006.
• 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.
• The first Qantas A380, VH-OQA "Nancy Bird Walton", made a historic landing at the airport on 27 September 2008, enthralling several thousand spectators who had gathered to catch a glimpse of the giant aircraft.
• Adelaide Airport is the principal airport of Adelaide, South Australia and the fifth busiest airport in Australia, servicing 7,337,000 passengers in the financial year ending 30 June 2013.
• Adelaide Airport handled 7,337,000 passengers last year.
• The airport encountered major problems during the eruption of Puyehue volcano in Chile, the ash cloud caused flights to be cancelled nationwide, with over 40,000 passengers being left stranded in Adelaide.
• Adelaide Airport (ADL) has 2 runways.

Facts about Helena Regional Airport (HLN):

• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• 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.
• Helena Regional Airport (HLN) has 3 runways.
• 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.