Nonstop flight route between Mascot (near Sydney), Australia and Alton, Illinois, United States:
Departure Airport:
Arrival Airport:
Distance from SYD to ALN:
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- About this route
- SYD Airport Information
- ALN Airport Information
- Facts about SYD
- Facts about ALN
- Map of Nearest Airports to SYD
- List of Nearest Airports to SYD
- Map of Furthest Airports from SYD
- List of Furthest Airports from SYD
- 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 Sydney (Kingsford Smith) Airport (SYD), Mascot (near Sydney), Australia and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 9,079 miles (or 14,612 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 large distance between Sydney (Kingsford Smith) Airport and St. Louis Regional Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Sydney (Kingsford Smith) Airport and St. Louis Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SYD / YSSY |
| Airport Names: |
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| Location: | Mascot (near Sydney), Australia |
| GPS Coordinates: | 33°56'45"S by 151°10'37"E |
| Area Served: | Sydney |
| Operator/Owner: | Sydney Airport Corporation Limited |
| Airport Type: | Public |
| Elevation: | 21 feet (6 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from SYD |
| More Information: | SYD 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 Sydney (Kingsford Smith) Airport (SYD):
- Since the international terminal's original completion, it has undergone two large expansions.
- Sydney Airport had a fourth passenger terminal, east of Terminal 2.
- Terminal 2, located in the airport's north-eastern section, was the former home of Ansett Australia's domestic operations.
- The Darwin – Sydney route includes data from May 2012, prior data was not released.
- The limitations of having only two runways that crossed each other had become apparent and governments grappled with Sydney's airport capacity for decades.
- Sydney (Kingsford Smith) Airport (SYD) has 3 runways.
- The closest airport to Sydney (Kingsford Smith) Airport (SYD) is Bankstown Airport (BWU), which is located only 11 miles (18 kilometers) W of SYD.
- Because of Sydney (Kingsford Smith) Airport's relatively low elevation of 21 feet, planes can take off or land at Sydney (Kingsford Smith) 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 "Sydney (Kingsford Smith) Airport", another name for SYD is "Kingsford-Smith Airport".
- The furthest airport from Sydney (Kingsford Smith) Airport (SYD) is Santa Maria Airport (SMA), which is nearly antipodal to Sydney (Kingsford Smith) Airport (meaning Sydney (Kingsford Smith) Airport is almost on the exact opposite side of the Earth from Santa Maria Airport), and is located 12,144 miles (19,543 kilometers) away in Santa Maria, Portugal.
- The airport provides a shuttle service between the terminals at a cost of A$5.50.
Facts about St. Louis Regional Airport (ALN):
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- 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.
- 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.
