Nonstop flight route between Plymouth, Indiana, United States and Alton, Illinois, United States:
Departure Airport:
(41°21'54"N by 86°18'1"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from PLY to ALN:
261.48 miles (420.81 km)
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- About this route
- PLY Airport Information
- ALN Airport Information
- Facts about PLY
- Facts about ALN
- Map of Nearest Airports to PLY
- List of Nearest Airports to PLY
- Map of Furthest Airports from PLY
- List of Furthest Airports from PLY
- 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 Plymouth Municipal Airport (PLY), Plymouth, Indiana, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 261 miles (or 421 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 Plymouth Municipal 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: | PLY / |
| Airport Names: |
|
| Location: | Plymouth, Indiana, United States |
| GPS Coordinates: | 41°21'54"N by 86°18'1"W |
| Area Served: | Plymouth, Indiana |
| Operator/Owner: | Plymouth BOAC |
| Airport Type: | Public |
| Elevation: | 800 feet (244 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PLY |
| More Information: | PLY 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 Plymouth Municipal Airport (PLY):
- The closest airport to Plymouth Municipal Airport (PLY) is Fulton County Airport (RCR), which is located 22 miles (35 kilometers) SSE of PLY.
- In addition to being known as "Plymouth Municipal Airport", another name for PLY is "C65".
- Plymouth Municipal Airport (PLY) currently has only 1 runway.
- Because of Plymouth Municipal Airport's relatively low elevation of 800 feet, planes can take off or land at Plymouth Municipal 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 Plymouth Municipal Airport (PLY) is Margaret River Airport (MGV), which is located 11,163 miles (17,965 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Louis Regional Airport (ALN):
- 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.
- In the spring of 2004 the airport was at the center of a scandal.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 21.59 miles (34.74 km) SSE | Fulton County Airport (RCR) | Rochester, Indiana, United States |     |
| 2 | 23.74 miles (38.20 km) N | South Bend International Airport (SBN) | South Bend, Indiana, United States | |
| 3 | 26.66 miles (42.91 km) WNW | La Porte Municipal Airport (LPO) | La Porte, Indiana, United States | |
| 4 | 26.66 miles (42.91 km) WNW | La Porte Municipal Airport (PPO) | La Porte, Indiana, United States | |
| 5 | 28.49 miles (45.84 km) ENE | Goshen Municipal Airport (GSH) | Goshen, Indiana, United States | |
| 6 | 28.91 miles (46.52 km) NNE | Elkhart Municipal Airport (EKI) | Elkhart, Indiana, United States | |
| 7 | 33.09 miles (53.26 km) N | Jerry Tyler Memorial Airport (NLE) | Niles, Michigan, United States | |
| 8 | 35.67 miles (57.40 km) NW | Michigan City Municipal Airport (MGC) | Michigan City, Indiana, United States | |
| 9 | 37.14 miles (59.78 km) W | Porter County Regional Airport (VPZ) | Valparaiso, Indiana, United States | |
| 10 | 50.13 miles (80.68 km) S | Grissom Air Reserve Base (GUS) | Peru, Indiana, United States | |
| 11 | 53.16 miles (85.55 km) N | Southwest Michigan Regional Airport (BEH) | Benton Harbor, Michigan, United States | |
| 12 | 54.20 miles (87.22 km) WSW | Jasper County Airport (RNZ) | Rensselaer, Indiana, United States | |
| 13 | 59.18 miles (95.25 km) SSE | Kokomo Municipal Airport (OKK) | Kokomo, Indiana, United States | |
| 14 | 60.14 miles (96.79 km) WNW | Gary/Chicago International Airport (GYY) | Gary, Indiana (near Chicago), United States | |
| 15 | 61.54 miles (99.04 km) ESE | Smith Field (SMD) | Fort Wayne, Indiana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,162.76 miles (17,964.67 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,139.41 miles (17,927.11 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,122.15 miles (17,899.32 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,114.80 miles (17,887.49 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,070.29 miles (17,815.85 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 11,059.19 miles (17,798.00 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 7 | 11,057.27 miles (17,794.90 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,047.02 miles (17,778.40 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,027.27 miles (17,746.62 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,023.32 miles (17,740.28 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 10,971.96 miles (17,657.62 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 10,939.58 miles (17,605.51 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,930.25 miles (17,590.48 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,920.50 miles (17,574.80 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,878.68 miles (17,507.50 km) SW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, 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 | |