Nonstop flight route between Aberdeen Proving Ground, Maryland, United States and Alton, Illinois, United States:
Departure Airport:
(39°27'57"N by 76°10'8"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from APG to ALN:
743.59 miles (1,196.70 km)
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Jump to:
- About this route
- APG Airport Information
- ALN Airport Information
- Facts about APG
- Facts about ALN
- Map of Nearest Airports to APG
- List of Nearest Airports to APG
- Map of Furthest Airports from APG
- List of Furthest Airports from APG
- 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 Phillips Army Airfield (APG), Aberdeen Proving Ground, Maryland, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 744 miles (or 1,197 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 Phillips Army Airfield 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: | APG / KAPG |
| Airport Name: | Phillips Army Airfield |
| Location: | Aberdeen Proving Ground, Maryland, United States |
| GPS Coordinates: | 39°27'57"N by 76°10'8"W |
| Operator/Owner: | United States Army |
| Airport Type: | Military |
| Elevation: | 57 feet (17 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from APG |
| More Information: | APG 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 Phillips Army Airfield (APG):
- Phillips Army Airfield (APG) has 3 runways.
- The closest airport to Phillips Army Airfield (APG) is Martin State Airport (MTN), which is located only 16 miles (26 kilometers) SW of APG.
- The furthest airport from Phillips Army Airfield (APG) is Margaret River Airport (MGV), which is located 11,706 miles (18,838 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Phillips Army Airfield's relatively low elevation of 57 feet, planes can take off or land at Phillips Army Airfield 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.
Facts about St. Louis Regional Airport (ALN):
- Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.
- 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.
- 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.
- 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.
- The 2,250 acres airfield sits at 544 ft MSL.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.29 miles (26.22 km) SW | Martin State Airport (MTN) | Baltimore, Maryland, United States |     |
| 2 | 33.35 miles (53.67 km) ENE | Wilmington/Philadelphia Regional Airport (ILG) | Wilmington, Delaware, United States | |
| 3 | 33.41 miles (53.77 km) SW | Baltimore/Washington International Thurgood Marshall Airport (BWI) | between Baltimore, Maryland and Washington, D.C., United States | |
| 4 | 38.92 miles (62.64 km) NNE | Chester County G. O. Carlson Airport (CTH) | Coatesville, Pennsylvania, United States | |
| 5 | 41.11 miles (66.16 km) SW | Tipton Airport (FME) | Odenton, Maryland, United States | |
| 6 | 42.01 miles (67.61 km) SSW | Lee Airport (ANP) | Annapolis, Maryland, United States | |
| 7 | 44.30 miles (71.29 km) ESE | Dover Air Force Base (DOV) | Dover, Delaware, United States | |
| 8 | 45.82 miles (73.74 km) N | Lancaster Airport (LNS) | Lancaster, Pennsylvania, United States | |
| 9 | 46.05 miles (74.11 km) S | Easton Airport (ESN) | Easton, Maryland, United States | |
| 10 | 47.78 miles (76.90 km) NE | Brandywine Airport (OQN) | West Chester, Pennsylvania, United States | |
| 11 | 48.70 miles (78.38 km) NW | York Airport (THV) | York, Pennsylvania, United States | |
| 12 | 52.46 miles (84.42 km) SW | College Park Airport (CGS) | College Park, Maryland, United States | |
| 13 | 53.65 miles (86.34 km) ENE | Philadelphia Seaplane BaseChandler Field (PSQ) | Essington, Pennsylvania, United States | |
| 14 | 56.75 miles (91.34 km) ENE | Philadelphia International Airport (PHL) | Philadelphia, Pennsylvania, United States | |
| 15 | 57.13 miles (91.95 km) WSW | Montgomery County Airpark (GAI) | Gaithersburg, Maryland, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,705.51 miles (18,838.15 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,681.77 miles (18,799.93 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,668.29 miles (18,778.25 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,656.37 miles (18,759.07 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,607.68 miles (18,680.71 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,603.27 miles (18,673.60 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,592.28 miles (18,655.91 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,581.39 miles (18,638.39 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,573.86 miles (18,626.27 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,540.74 miles (18,572.97 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,473.78 miles (18,465.21 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,445.29 miles (18,419.36 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,427.36 miles (18,390.51 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,426.09 miles (18,388.47 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,363.94 miles (18,288.44 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 | |