Nonstop flight route between Louisville, Kentucky, United States and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Louisville International Airport (SDF), Louisville, Kentucky, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 238 miles (or 383 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 Louisville 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 Louisville International Airport (SDF):

• The April 1957 Official Airline Guide shows 45 weekday departures on Eastern Airlines, 19 American, 9 TWA, 4 Piedmont and 2 Ozark.
• Louisville International Airport handled 3,349,162 passengers last year.
• The closest airport to Louisville International Airport (SDF) is Bowman Field (LOU), which is located only 5 miles (9 kilometers) NE of SDF.
• Standiford Field was built by the Army Corps of Engineers in 1941 on a parcel of land south of Louisville that was found not to have flooded during the Ohio River flood of 1937.
• Because of Louisville International Airport's relatively low elevation of 501 feet, planes can take off or land at Louisville International 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.
• Louisville International Airport is home to the Chautauqua Airlines maintenance complex, capable of holding nine planes, as well as the Compass Airlines main maintenance complex.
• In addition to being known as "Louisville International Airport", another name for SDF is "Standiford Field".
• Louisville International Airport (SDF) has 3 runways.
• Until around 1947 Bowman Field was Louisville's main airport.
• The furthest airport from Louisville International Airport (SDF) is Margaret River Airport (MGV), which is located 11,239 miles (18,088 kilometers) away in Margaret River, Western Australia, Australia.

Facts about St. Louis Regional Airport (ALN):

• 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.
• In the spring of 2004 the airport was at the center of a scandal.
• St. Louis Regional Airport (ALN) has 2 runways.
• 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.