Nonstop flight route between Selinsgrove, Pennsylvania, United States and St. Louis, Missouri, United States:
Departure Airport:

Arrival Airport:

Distance from SEG to STL:
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- About this route
- SEG Airport Information
- STL Airport Information
- Facts about SEG
- Facts about STL
- Map of Nearest Airports to SEG
- List of Nearest Airports to SEG
- Map of Furthest Airports from SEG
- List of Furthest Airports from SEG
- Map of Nearest Airports to STL
- List of Nearest Airports to STL
- Map of Furthest Airports from STL
- List of Furthest Airports from STL
About this route:
A direct, nonstop flight between Penn Valley Airport (SEG), Selinsgrove, Pennsylvania, United States and Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States would travel a Great Circle distance of 730 miles (or 1,175 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 Penn Valley Airport and Lambert–St. Louis International Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | SEG / KSEG |
Airport Name: | Penn Valley Airport |
Location: | Selinsgrove, Pennsylvania, United States |
GPS Coordinates: | 40°49'15"N by 76°51'51"W |
Area Served: | Selinsgrove, Pennsylvania |
Operator/Owner: | Penn Valley Airport Authority |
Airport Type: | Public |
Elevation: | 463 feet (141 meters) |
# of Runways: | 1 |
View all routes: | Routes from SEG |
More Information: | SEG Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | STL / KSTL |
Airport Name: | Lambert–St. Louis International Airport |
Location: | St. Louis, Missouri, United States |
GPS Coordinates: | 38°44'49"N by 90°21'41"W |
Area Served: | Greater St. Louis, Missouri |
Operator/Owner: | City of St. Louis |
Airport Type: | Public |
Elevation: | 605 feet (184 meters) |
# of Runways: | 4 |
View all routes: | Routes from STL |
More Information: | STL Maps & Info |
Facts about Penn Valley Airport (SEG):
- The closest airport to Penn Valley Airport (SEG) is Williamsport Regional Airport (IPT), which is located 29 miles (47 kilometers) N of SEG.
- Because of Penn Valley Airport's relatively low elevation of 463 feet, planes can take off or land at Penn Valley 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.
- Penn Valley Airport (SEG) currently has only 1 runway.
- The furthest airport from Penn Valley Airport (SEG) is Margaret River Airport (MGV), which is located 11,627 miles (18,711 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Lambert–St. Louis International Airport (STL):
- The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
- However, TWA faced increasing problems as overall airline demand softened in response to a softening overall economy.
- The airport grew from a balloon launching base, Kinloch Field, part of the 1890s Kinloch Park suburban development.
- By September 2002, Lambert's passenger traffic had declined by 16.9% from before the terrorist attacks a year earlier, which was the 8th biggest percentage drop of the major US airports.
- Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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.
- The April 1957 Official Airline Guide shows TWA with 44 weekday departures.
- The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
- After the war, NAS St.
- Lambert–St. Louis International Airport (STL) has 4 runways.
- American Airlines is now the airport's second-busiest operating airline.