Nonstop flight route between Atlanta, Georgia, United States and Alton, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from PDK to ALN:
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- About this route
- PDK Airport Information
- ALN Airport Information
- Facts about PDK
- Facts about ALN
- Map of Nearest Airports to PDK
- List of Nearest Airports to PDK
- Map of Furthest Airports from PDK
- List of Furthest Airports from PDK
- 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 DeKalb–Peachtree Airport (PDK), Atlanta, Georgia, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 471 miles (or 758 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 DeKalb–Peachtree 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: | PDK / KPDK |
Airport Name: | DeKalb–Peachtree Airport |
Location: | Atlanta, Georgia, United States |
GPS Coordinates: | 33°52'32"N by 84°18'6"W |
Area Served: | Atlanta, Georgia |
Operator/Owner: | DeKalb County |
Airport Type: | Public |
Elevation: | 1003 feet (306 meters) |
# of Runways: | 4 |
View all routes: | Routes from PDK |
More Information: | PDK 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 DeKalb–Peachtree Airport (PDK):
- Dekalb–Peachtree Airport covers an area of 745 acres at an elevation of 1,003 feet above mean sea level.
- DeKalb–Peachtree Airport (PDK) has 4 runways.
- The furthest airport from DeKalb–Peachtree Airport (PDK) is Margaret River Airport (MGV), which is located 11,326 miles (18,227 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to DeKalb–Peachtree Airport (PDK) is Dobbins Air Reserve Base (MGE), which is located only 13 miles (20 kilometers) WNW of PDK.
- The airport has over 100 hangars.
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.
- 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.
- 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.
- In the spring of 2004 the airport was at the center of a scandal.
- The 2,250 acres airfield sits at 544 ft MSL.
- West Star Aviation is the largest fixed base operations company at the airport.
- 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.