Nonstop flight route between Alton, Illinois, United States and Sulphur Springs, Texas, United States:
Departure Airport:

Arrival Airport:

Distance from ALN to SLR:
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- About this route
- ALN Airport Information
- SLR Airport Information
- Facts about ALN
- Facts about SLR
- Map of Nearest Airports to ALN
- List of Nearest Airports to ALN
- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
- Map of Nearest Airports to SLR
- List of Nearest Airports to SLR
- Map of Furthest Airports from SLR
- List of Furthest Airports from SLR
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Sulphur Springs Municipal Airport (SLR), Sulphur Springs, Texas, United States would travel a Great Circle distance of 504 miles (or 810 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 St. Louis Regional Airport and Sulphur Springs Municipal Airport, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | SLR / KSLR |
Airport Name: | Sulphur Springs Municipal Airport |
Location: | Sulphur Springs, Texas, United States |
GPS Coordinates: | 33°9'34"N by 95°37'15"W |
Area Served: | Sulphur Springs, Texas |
Operator/Owner: | City of Sulphur Springs |
Airport Type: | Public |
Elevation: | 489 feet (149 meters) |
# of Runways: | 1 |
View all routes: | Routes from SLR |
More Information: | SLR Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- In the spring of 2004 the airport was at the center of a scandal.
- 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.
Facts about Sulphur Springs Municipal Airport (SLR):
- The closest airport to Sulphur Springs Municipal Airport (SLR) is Majors Airport (GVT), which is located 26 miles (43 kilometers) WSW of SLR.
- Sulphur Springs Municipal Airport (SLR) currently has only 1 runway.
- Because of Sulphur Springs Municipal Airport's relatively low elevation of 489 feet, planes can take off or land at Sulphur Springs Municipal 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 Sulphur Springs Municipal Airport (SLR) is Sir Gaëtan Duval Airport (RRG), which is located 10,846 miles (17,455 kilometers) away in Rodrigues Island, Mauritius.
- Sulphur Springs Municipal Airport covers an area of 197 acres at an elevation of 489 feet above mean sea level.