Nonstop flight route between Monroe, Louisiana, United States and Alton, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from MLU to ALN:
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- About this route
- MLU Airport Information
- ALN Airport Information
- Facts about MLU
- Facts about ALN
- Map of Nearest Airports to MLU
- List of Nearest Airports to MLU
- Map of Furthest Airports from MLU
- List of Furthest Airports from MLU
- Map of Nearest Airports to ALN
- List of Nearest Airports to ALN
- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
About this route:
A direct, nonstop flight between Monroe Regional Airport (MLU), Monroe, Louisiana, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 455 miles (or 732 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 Monroe Regional Airport and St. Louis Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | MLU / KMLU |
Airport Name: | Monroe Regional Airport |
Location: | Monroe, Louisiana, United States |
GPS Coordinates: | 32°30'38"N by 92°2'16"W |
Area Served: | Monroe, Louisiana |
Operator/Owner: | City of Monroe |
Airport Type: | Public |
Elevation: | 79 feet (24 meters) |
# of Runways: | 3 |
View all routes: | Routes from MLU |
More Information: | MLU Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | ALN / KALN |
Airport Name: | St. Louis Regional Airport |
Location: | Alton, Illinois, United States |
GPS Coordinates: | 38°53'25"N by 90°2'45"W |
Area Served: | Alton, Illinois |
Operator/Owner: | St. Louis Regional |
Airport Type: | Public |
Elevation: | 544 feet (166 meters) |
# of Runways: | 2 |
View all routes: | Routes from ALN |
More Information: | ALN Maps & Info |
Facts about Monroe Regional Airport (MLU):
- The vast majority of aircraft flown at Selman AAF were Beech C-45s, also known as the AT-7.
- Because of Monroe Regional Airport's relatively low elevation of 79 feet, planes can take off or land at Monroe 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 Monroe Regional Airport (MLU) is Cocos (Keeling) Island Airport (CCK), which is located 10,924 miles (17,581 kilometers) away in Cocos Islands, Australia.
- Monroe Regional Airport (MLU) has 3 runways.
- It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a primary commercial service airport since it has over 10,000 passenger boardings per year.
- The closest airport to Monroe Regional Airport (MLU) is Ruston Regional Airport (RSN), which is located 32 miles (52 kilometers) W of MLU.
- Monroe Regional Airport covers an area of 2,660 acres at an elevation of 79 feet above mean sea level.
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.
- Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.
- St. Louis Regional Airport (ALN) has 2 runways.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- 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.
- 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.