Nonstop flight route between Columbus, Ohio, United States and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Port Columbus International Airport (CMH), Columbus, Ohio, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 389 miles (or 626 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 Port Columbus 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 Port Columbus International Airport (CMH):

• Because of Port Columbus International Airport's relatively low elevation of 815 feet, planes can take off or land at Port Columbus 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.
• Between 1998 and 2000, numerous airport expansion and renovation projects were completed, including a $25 million terminal renovation in 1998 that included additional retail shops, new flight information displays, enhanced lighting, upgraded flooring, and a new food court.
• Runway 10L/28R is just north of the 40th parallel north.
• Port Columbus International Airport (CMH) has 2 runways.
• The furthest airport from Port Columbus International Airport (CMH) is Margaret River Airport (MGV), which is located 11,361 miles (18,284 kilometers) away in Margaret River, Western Australia, Australia.
• An American Airlines Convair CV-240 from Dayton International Airport was on approach to Runway 27 at 300 feet when the left side of the plane collided with a US Navy Beechcraft SNB-2C Navigator, also on approach.
• The closest airport to Port Columbus International Airport (CMH) is Ohio State University Airport (OSU), which is located only 11 miles (18 kilometers) WNW of CMH.
• The original 1929 layout for the airport covered 524 acres, with two runways 2,500 and 3,500 feet long.

Facts about St. Louis Regional Airport (ALN):

• In the spring of 2004 the airport was at the center of a scandal.
• 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.
• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• 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.