Nonstop flight route between Selinsgrove, Pennsylvania, United States and Alton, Illinois, United States:
Departure Airport:
(40°49'15"N by 76°51'51"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from SEG to ALN:
711.06 miles (1,144.34 km)
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Jump to:
- About this route
- SEG Airport Information
- ALN Airport Information
- Facts about SEG
- Facts about ALN
- 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 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 Penn Valley Airport (SEG), Selinsgrove, Pennsylvania, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 711 miles (or 1,144 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 St. Louis Regional 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: | 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 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.
- 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.
- Penn Valley Airport (SEG) currently has only 1 runway.
Facts about St. Louis Regional Airport (ALN):
- Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- 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.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 29.21 miles (47.01 km) N | Williamsport Regional Airport (IPT) | Williamsport, Pennsylvania, United States |     |
| 2 | 30.85 miles (49.66 km) SSE | Muir Army Airfield (MUI) | Fort Indiantown Gap, Pennsylvania, United States | |
| 3 | 36.33 miles (58.47 km) NW | William T. Piper Memorial Airport (LHV) | Lock Haven, Pennsylvania, United States | |
| 4 | 41.14 miles (66.21 km) WSW | Mifflin County Airport (RED) | Reedsville, Pennsylvania, United States | |
| 5 | 41.73 miles (67.16 km) S | Capital City Airport (HAR) | Harrisburg, Pennsylvania, United States | |
| 6 | 43.72 miles (70.35 km) S | Harrisburg International Airport (MDT) | Harrisburg, Pennsylvania, United States | |
| 7 | 46.81 miles (75.33 km) ENE | Hazleton Municipal Airport (HZL) | Hazleton, Pennsylvania, United States | |
| 8 | 51.50 miles (82.88 km) W | University Park Airport (SCE) | State College, Pennsylvania, United States | |
| 9 | 56.20 miles (90.44 km) ESE | Reading Regional Airport (RDG) | Reading, Pennsylvania, United States | |
| 10 | 56.82 miles (91.44 km) SSE | Lancaster Airport (LNS) | Lancaster, Pennsylvania, United States | |
| 11 | 62.14 miles (100.01 km) ENE | Wilkes-Barre Wyoming Valley Airport (WBW) | Wilkes-Barre, Pennsylvania, United States | |
| 12 | 62.47 miles (100.54 km) S | York Airport (THV) | York, Pennsylvania, United States | |
| 13 | 64.06 miles (103.10 km) W | Mid-State Regional Airport (PSB) | Philipsburg, Pennsylvania, United States | |
| 14 | 69.34 miles (111.58 km) ENE | Wilkes-Barre/Scranton International Airport (AVP) | Avoca, Pennsylvania, United States | |
| 15 | 71.09 miles (114.41 km) SSW | Gettysburg Regional Airport (GTY) | Gettysburg, Pennsylvania, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,626.72 miles (18,711.35 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,602.75 miles (18,672.77 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,593.95 miles (18,658.61 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,576.81 miles (18,631.02 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,541.08 miles (18,573.53 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,518.40 miles (18,537.03 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,508.55 miles (18,521.18 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,500.80 miles (18,508.69 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 9 | 11,497.37 miles (18,503.19 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,450.31 miles (18,427.44 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,379.97 miles (18,314.24 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,354.64 miles (18,273.47 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,333.25 miles (18,239.05 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 11,331.42 miles (18,236.10 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 15 | 11,300.07 miles (18,185.65 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 19.64 miles (31.61 km) WSW | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 2 | 22.85 miles (36.78 km) SSW | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 3 | 26.41 miles (42.50 km) SSE | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 4 | 36.08 miles (58.06 km) E | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 5 | 36.24 miles (58.32 km) WSW | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 6 | 60.74 miles (97.76 km) ESE | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 7 | 68.78 miles (110.69 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 8 | 75.13 miles (120.92 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 9 | 88.08 miles (141.75 km) SSE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 10 | 90.73 miles (146.02 km) NE | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| 11 | 95.12 miles (153.07 km) NW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 12 | 96.44 miles (155.20 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 13 | 102.97 miles (165.72 km) ENE | Coles County Memorial Airport (MTO) | Mattoon/Charleston, Illinois, United States | |
| 14 | 107.04 miles (172.27 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 15 | 115.57 miles (186.00 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,002.15 miles (17,706.21 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,979.99 miles (17,670.53 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,957.22 miles (17,633.90 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,954.58 miles (17,629.65 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,926.12 miles (17,583.85 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,910.74 miles (17,559.09 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,901.55 miles (17,544.30 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,897.24 miles (17,537.37 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,880.36 miles (17,510.20 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,861.31 miles (17,479.54 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,859.59 miles (17,476.77 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,841.22 miles (17,447.21 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,808.74 miles (17,394.93 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,807.95 miles (17,393.67 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,799.72 miles (17,380.43 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |