Nonstop flight route between Alton, Illinois, United States and Boise, Idaho, United States:

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Boise Airport (BOI), Boise, Idaho, United States would travel a Great Circle distance of 1,392 miles (or 2,240 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 St. Louis Regional Airport and Boise Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about St. Louis Regional Airport (ALN):

• 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.
• 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.
• 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 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.
• St. Louis Regional Airport (ALN) has 2 runways.

Facts about Boise Airport (BOI):

• The furthest airport from Boise Airport (BOI) is Tôlanaro Airport (FTU), which is located 10,843 miles (17,451 kilometers) away in Tôlanaro, Madagascar.
• Boise Airport covers an area of 5,000 acres at an elevation of 2,871 feet above mean sea level.
• Boise Airport (BOI) has 3 runways.
• The closest airport to Boise Airport (BOI) is Mountain Home Air Force Base (MUO), which is located 40 miles (64 kilometers) SSE of BOI.
• In 2005 over 3 million passengers passed through the airport.
• In addition to being known as "Boise Airport", other names for BOI include "Boise Air Terminal" and "Gowen Field".
• After the war the portion of the field used by the Army Air Forces was returned to the city.
• Gowen Field Air National Guard Base primarily refers to the military facilities on the south side of the runways, which includes Air National Guard, Army National Guard, and reserve units of the Army, Navy, and Marine Corps.
• In addition to being a commercial and general aviation airport, Boise also sees use by the Idaho Air National Guard on the Gowen Field Air National Guard Base portion of the airport.
• Law enforcement at the airport is handled by the Boise Police Department.