Nonstop flight route between Alton, Illinois, United States and Sheffield, England, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from ALN to SZD:
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- About this route
- ALN Airport Information
- SZD Airport Information
- Facts about ALN
- Facts about SZD
- 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 SZD
- List of Nearest Airports to SZD
- Map of Furthest Airports from SZD
- List of Furthest Airports from SZD
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Sheffield City Heliport (SZD), Sheffield, England, United Kingdom would travel a Great Circle distance of 4,077 miles (or 6,562 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 St. Louis Regional Airport and Sheffield City Heliport, 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 St. Louis Regional Airport and Sheffield City Heliport. You'll see that it will travel the same route of the red line on this map!
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: | SZD / EGSY |
Airport Name: | Sheffield City Heliport |
Location: | Sheffield, England, United Kingdom |
GPS Coordinates: | 53°23'39"N by 1°23'18"W |
Area Served: | Sheffield |
Operator/Owner: | Peel Airports and Heliports |
Airport Type: | Public |
Elevation: | 231 feet (70 meters) |
# of Runways: | 1 |
View all routes: | Routes from SZD |
More Information: | SZD Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- The 2,250 acres airfield sits at 544 ft MSL.
- 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.
- 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.
Facts about Sheffield City Heliport (SZD):
- Planning permission has been granted to turn the entire site into a business park, however in December 2012, Sheffield City Council received details of a bid to reopen the airport.
- Passenger figures ranged from 46,000 in 1998, 75,000 in 1999, 60,000 in 2000, 33,000 in 2001 and 13,000 in the airports final year of operation.
- Because of Sheffield City Heliport's relatively low elevation of 231 feet, planes can take off or land at Sheffield City Heliport 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.
- There has been a degree of controversy over whether there was any incentive for Peel to promote the airport.
- Sheffield City Heliport (SZD) currently has only 1 runway.
- The furthest airport from Sheffield City Heliport (SZD) is Dunedin International Airport (DUD), which is located 11,799 miles (18,989 kilometers) away in Dunedin, Otago, New Zealand.
- Before it opened, Sheffield was the largest city in Europe without its own airport although there was a proposal made in 1968 to build an airport on land near Todwick in Rotherham but came to nothing.
- The closest airport to Sheffield City Heliport (SZD) is Robin Hood Airport Doncaster Sheffield (DSA), which is located only 17 miles (27 kilometers) ENE of SZD.