Nonstop flight route between Raleigh / Durham, North Carolina, United States and Alton, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from RDU to ALN:
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- About this route
- RDU Airport Information
- ALN Airport Information
- Facts about RDU
- Facts about ALN
- Map of Nearest Airports to RDU
- List of Nearest Airports to RDU
- Map of Furthest Airports from RDU
- List of Furthest Airports from RDU
- 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 Raleigh–Durham International Airport (RDU), Raleigh / Durham, North Carolina, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 652 miles (or 1,049 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 Raleigh–Durham 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:
IATA / ICAO Codes: | RDU / KRDU |
Airport Name: | Raleigh–Durham International Airport |
Location: | Raleigh / Durham, North Carolina, United States |
GPS Coordinates: | 35°52'40"N by 78°47'14"W |
Area Served: | The Research Triangle Metropolitan Region of North Carolina |
Airport Type: | Public |
Elevation: | 435 feet (133 meters) |
# of Runways: | 3 |
View all routes: | Routes from RDU |
More Information: | RDU 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 Raleigh–Durham International Airport (RDU):
- Terminal A was renamed Terminal 1 on October 26, 2008 to bring RDU in line with terminal naming conventions and to end years of confusion.
- The closest airport to Raleigh–Durham International Airport (RDU) is Triangle North Executive Airport (Franklin County Airport) (LFN), which is located 27 miles (44 kilometers) ENE of RDU.
- The furthest airport from Raleigh–Durham International Airport (RDU) is Margaret River Airport (MGV), which is located 11,639 miles (18,731 kilometers) away in Margaret River, Western Australia, Australia.
- AA retained the daily nonstop flight to London, originally launched to Gatwick Airport in May 1994 with a Boeing 767-200ER.
- Because of Raleigh–Durham International Airport's relatively low elevation of 435 feet, planes can take off or land at Raleigh–Durham 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.
- The airport incorporates two cargo areas, North Cargo and South Cargo.
- The new Raleigh–Durham Airport opened on May 1, 1943 with flights by Eastern Airlines.
- Raleigh–Durham International Airport (RDU) has 3 runways.
- After deregulation Allegheny Airlines arrived in 1979 and by 1985 Trans World Airlines, American Airlines, Ozark, People Express, New York Air, and Pan Am had all put in appearances.
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.
- 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.
- Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- 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.