Nonstop flight route between Alton, Illinois, United States and San Diego, California, United States:
Departure Airport:

Arrival Airport:

Distance from ALN to SAN:
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- About this route
- ALN Airport Information
- SAN Airport Information
- Facts about ALN
- Facts about SAN
- Map of Nearest Airports to ALN
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- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
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About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and San Diego International Airport (SAN), San Diego, California, United States would travel a Great Circle distance of 1,573 miles (or 2,531 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 San Diego International 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: | SAN / KSAN |
Airport Names: |
|
Location: | San Diego, California, United States |
GPS Coordinates: | 32°44'0"N by 117°11'22"W |
Area Served: | Greater San Diego |
Airport Type: | Public |
Elevation: | 17 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from SAN |
More Information: | SAN Maps & Info |
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.
- 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.
- In the spring of 2004 the airport was at the center of a scandal.
- 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.
- 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 San Diego International Airport (SAN):
- Built and operated by the City of San Diego through the sale of municipal bonds to be repaid by airport users, then the San Diego Unified Port District, the airport is now operated by the San Diego County Regional Airport Authority.
- San Diego International is the busiest single-runway commercial airport in the United States, and the second-busiest single-use runway in the world after London Gatwick with about 550 departures and arrivals carrying 50,000 passengers each day, and a total of 17,250,269 passengers in 2012.
- Terrain east and west of the airport greatly impacts the available runway length.
- Because of San Diego International Airport's relatively low elevation of 17 feet, planes can take off or land at San Diego 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.
- In addition to being known as "San Diego International Airport", another name for SAN is "Lindbergh Field".
- San Diego International Airport (SAN) currently has only 1 runway.
- British Airways resumed nonstop service to London Heathrow Airport on June 1, 2011 with Boeing 777-200ERs.
- The closest airport to San Diego International Airport (SAN) is NAS North Island (NZY), which is located only 3 miles (5 kilometers) SSW of SAN.
- The furthest airport from San Diego International Airport (SAN) is Sir Gaëtan Duval Airport (RRG), which is located 11,540 miles (18,571 kilometers) away in Rodrigues Island, Mauritius.
- The Army Air Corps took over the field in 1942, improving it to handle the heavy bombers being manufactured in the region.
- The top five airlines by market share in 2011 are Southwest Airlines, United Airlines, Delta Air Lines, American Airlines, and Alaska Airlines.
- The first scheduled jet flights at Lindbergh Field were in 1960, American Airlines Boeing 720s to Phoenix and United Airlines 720s to San Francisco.