Nonstop flight route between Pituffik, Greenland and Helena, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from THU to HLN:
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- About this route
- THU Airport Information
- HLN Airport Information
- Facts about THU
- Facts about HLN
- Map of Nearest Airports to THU
- List of Nearest Airports to THU
- Map of Furthest Airports from THU
- List of Furthest Airports from THU
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
About this route:
A direct, nonstop flight between Thule Air Base (THU), Pituffik, Greenland and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 2,390 miles (or 3,847 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 relatively short distance between Thule Air Base and Helena Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | THU / BGTL |
Airport Names: |
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Location: | Pituffik, Greenland |
GPS Coordinates: | 76°31'51"N by 68°42'11"W |
View all routes: | Routes from THU |
More Information: | THU Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | HLN / KHLN |
Airport Names: |
|
Location: | Helena, Montana, United States |
GPS Coordinates: | 46°36'24"N by 111°58'58"W |
Area Served: | Helena, Montana |
Operator/Owner: | Helena Regional Airport Authority |
Airport Type: | Public |
Elevation: | 3877 feet (1,182 meters) |
# of Runways: | 3 |
View all routes: | Routes from HLN |
More Information: | HLN Maps & Info |
Facts about Thule Air Base (THU):
- After liberation, Denmark ratified the Kauffmann treaty but began efforts to take over U.S.
- In 1961, a Ballistic Missile Early Warning System radar was constructed at "J-Site," 21 km northeast of main base.
- In addition to being known as "Thule Air Base", another name for THU is "Thule AB".
- The furthest airport from Thule Air Base (THU) is Hobart International Airport (HBA), which is located 9,883 miles (15,905 kilometers) away in Hobart, Tasmania, Australia.
- The closest airport to Thule Air Base (THU) is Savissivik Heliport (SVR), which is located 69 miles (111 kilometers) ESE of THU.
- In 1949, Denmark joined NATO and abandoned its attempt to remove the United States bases.
- After the German occupation of Denmark on 9 April 1940, Henrik Kauffmann Danish Ambassador to the United States, made an agreement "In the name of the king" with the United States authorizing the United States to defend the Danish colonies on Greenland from German aggression - this agreement faced Kaufmann with a charge of high treason.
- In 1959, the airbase was the main staging point for the construction of Camp Century, some 150 mi from the base.
- Thule Air Base is home to the 21st Space Wing's global network of sensors providing missile warning, space surveillance and space control to North American Aerospace Defense Command and Air Force Space Command.
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.
- 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".