Nonstop flight route between Madison, South Dakota, United States and Alton, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from XMD to ALN:
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- About this route
- XMD Airport Information
- ALN Airport Information
- Facts about XMD
- Facts about ALN
- Map of Nearest Airports to XMD
- List of Nearest Airports to XMD
- Map of Furthest Airports from XMD
- List of Furthest Airports from XMD
- 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 Madison Municipal Airport (XMD), Madison, South Dakota, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 508 miles (or 817 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 Madison Municipal 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: | XMD / KMDS |
Airport Names: |
|
Location: | Madison, South Dakota, United States |
GPS Coordinates: | 44°0'59"N by 97°5'8"W |
Area Served: | Madison, South Dakota |
Operator/Owner: | City of Madison |
Airport Type: | Public |
Elevation: | 1718 feet (524 meters) |
# of Runways: | 2 |
View all routes: | Routes from XMD |
More Information: | XMD 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 Madison Municipal Airport (XMD):
- Madison Municipal Airport (XMD) has 2 runways.
- The closest airport to Madison Municipal Airport (XMD) is Brookings Regional Airport (BKX), which is located 24 miles (39 kilometers) NNE of XMD.
- The furthest airport from Madison Municipal Airport (XMD) is Margaret River Airport (MGV), which is located 10,587 miles (17,039 kilometers) away in Margaret River, Western Australia, Australia.
- In addition to being known as "Madison Municipal Airport", another name for XMD is "MDS".
- Madison Municipal Airport covers an area of 375 acres at an elevation of 1,718 feet above mean sea level.
Facts about St. Louis Regional Airport (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.
- 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.
- 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.
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.