Nonstop flight route between Pituffik, Greenland and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Thule Air Base (THU), Pituffik, Greenland and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 2,680 miles (or 4,314 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 Thule Air Base and St. Louis 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 Thule Air Base and St. Louis 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 Thule Air Base (THU):

• Thule Air Base has served as the regional hub for nearby installations, including Cape Atholl, Camp Century, Camp TUTO, Sites 1 and 2, P-Mountain, J-Site, North and South Mountains, and a research rocket firing site.
• 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.
• In 1957 construction began on 4 Nike Missile sites around the base, and they and their radar systems were operational by the end of 1958.
• In addition to being known as "Thule Air Base", another name for THU is "Thule AB".
• The closest airport to Thule Air Base (THU) is Savissivik Heliport (SVR), which is located 69 miles (111 kilometers) ESE of THU.
• After liberation, Denmark ratified the Kauffmann treaty but began efforts to take over U.S.
• Thule became an Air Force Space Command base in 1982.
• 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.
• In 1954, the 378 m Globecom Tower, a tower for military radio communication, was built at Northmountain.

Facts about St. Louis Regional Airport (ALN):

• The furthest airport from St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
• In the spring of 2004 the airport was at the center of a scandal.
• Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.
• St. Louis Regional Airport (ALN) has 2 runways.
• Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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 closest airport to St. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.