Nonstop flight route between Great Falls, Montana, United States and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Great Falls International Airport (GTF), Great Falls, Montana, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 1,222 miles (or 1,966 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 Great Falls International Airport and St. Louis Regional Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Great Falls International Airport (GTF):

• Great Falls has had airline flights since the 1930s.
• Great Falls International Airport is home to Great Falls Air National Guard Base and the Montana Air National Guard's 120th Fighter Wing, the "Vigilantes." An Air National Guard unit operationally-gained by the Air Combat Command, the 120 FW transitioned from the F-16C Fighting Falcon to the F-15C Eagle in January 2009, which it employs in the air defense and air dominance missions.
• In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
• The closest airport to Great Falls International Airport (GTF) is Malmstrom Air Force Base (GFA), which is located only 9 miles (14 kilometers) E of GTF.
• Malmstrom Air Force Base, home of the 341st Missile Wing of the Air Force Global Strike Command, is 10 miles east of GTF, on the east side of Great Falls.
• Great Falls International Airport (GTF) has 3 runways.
• The furthest airport from Great Falls International Airport (GTF) is Sir Gaëtan Duval Airport (RRG), which is located 10,498 miles (16,896 kilometers) away in Rodrigues Island, Mauritius.

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.
• West Star Aviation is the largest fixed base operations company at the airport.
• Civic Memorial Airport opened in 1946 and received its current name in 1984.
• 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.
• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• 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.