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

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Thule Air Base (THU), Pituffik, Greenland 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 St. Louis Regional Airport and Thule Air Base, 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 St. Louis Regional Airport and Thule Air Base. 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 St. Louis Regional Airport (ALN):

• In the spring of 2004 the airport was at the center of a scandal.
• West Star Aviation is the largest fixed base operations company at the airport.
• 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.
• 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.
• 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.
• St. Louis Regional Airport (ALN) has 2 runways.

Facts about Thule Air Base (THU):

• Knud Rasmussen was the first to recognize the Pituffik plain as ideal for an airport.
• In addition to being known as "Thule Air Base", another name for THU is "Thule AB".
• 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.
• 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.
• 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 closest airport to Thule Air Base (THU) is Savissivik Heliport (SVR), which is located 69 miles (111 kilometers) ESE of THU.
• The Pentagon maintained that all four weapons had been destroyed.
• Thule AB was constructed in secret under the code name Operation Blue Jay, but the project was made public in September 1952.