Nonstop flight route between Alton, Illinois, United States and San Antonio, Texas, United States:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(29°31'36"N by 98°28'18"W)
Distance from ALN to SAT:
805.60 miles (1,296.48 km)
Share this route:
Jump to:
- About this route
- ALN Airport Information
- SAT Airport Information
- Facts about ALN
- Facts about SAT
- 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 SAT
- List of Nearest Airports to SAT
- Map of Furthest Airports from SAT
- List of Furthest Airports from SAT
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and San Antonio International Airport (SAT), San Antonio, Texas, United States would travel a Great Circle distance of 806 miles (or 1,296 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 St. Louis Regional Airport and San Antonio International Airport, the route shown on this map most likely still appears to be a straight line.
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: | SAT / KSAT |
| Airport Name: | San Antonio International Airport |
| Location: | San Antonio, Texas, United States |
| GPS Coordinates: | 29°31'36"N by 98°28'18"W |
| Area Served: | San Antonio–New Braunfels |
| Operator/Owner: | City of San Antonio |
| Airport Type: | Public |
| Elevation: | 809 feet (247 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from SAT |
| More Information: | SAT Maps & Info |
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.
- West Star Aviation is the largest fixed base operations company at the airport.
- 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.
Facts about San Antonio International Airport (SAT):
- The furthest airport from San Antonio International Airport (SAT) is Sir Gaëtan Duval Airport (RRG), which is located 11,114 miles (17,886 kilometers) away in Rodrigues Island, Mauritius.
- The former Terminal 2 was built in 1951–53, along with the FAA control tower and a baggage claim area.
- San Antonio International Airport (SAT) has 3 runways.
- The longest flight from San Antonio International Airport is to Seattle–Tacoma International Airport, a distance of 1,776 miles, with an average duration of 4 hours 7 minutes.
- Because of San Antonio International Airport's relatively low elevation of 809 feet, planes can take off or land at San Antonio 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.
- On November 9, 2010, San Antonio International Airport announced the opening of the brand new Terminal B, which contains 8 gates,.
- November 9, 2010 saw the closure of the original Terminal 2, and the opening of the new Terminal B.
- Airport diagram for March 1962
- The closest airport to San Antonio International Airport (SAT) is Randolph Air Force Base Joint Base San Antonio (RND), which is located only 12 miles (19 kilometers) E of SAT.
- San Antonio International Airport handled 8,034,720 passengers last year.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11.61 miles (18.68 km) E | Randolph Air Force Base Joint Base San Antonio (RND) | Universal City, Texas, United States | |
| 2 | 11.84 miles (19.05 km) SSW | Lackland Air Force Base Joint Base San Antonio (SKF) | San Antonio, Texas, United States | |
| 3 | 13.11 miles (21.10 km) S | Stinson Municipal Airport (SSF) | San Antonio, Texas, United States | |
| 4 | 44.00 miles (70.81 km) WSW | South Texas Regional Airport at Hondo (HDO) | Hondo, Texas, United States | |
| 5 | 48.18 miles (77.54 km) NW | Kerrville Municipal Airport (ERV) | Kerrville, Texas, United States | |
| 6 | 66.62 miles (107.21 km) NE | Austin–Bergstrom International Airport (AUS) | Austin, Texas, United States | |
| 7 | 79.61 miles (128.12 km) WSW | Garner Field (UVA) | Uvalde, Texas, United States | |
| 8 | 80.66 miles (129.82 km) NE | Austin Executive Airport (EDC) | Austin, Texas, United States | |
| 9 | 86.60 miles (139.38 km) SSW | Cotulla–La Salle County Airport (COT) | Cotulla, Texas, United States | |
| 10 | 104.63 miles (168.39 km) ESE | Victoria Regional Airport (VCT) | Victoria, Texas, United States | |
| 11 | 113.14 miles (182.09 km) NNE | Killeen–Fort Hood Regional Airport (GRK) | Fort Hood / Killeen, Texas, United States | |
| 12 | 117.48 miles (189.06 km) NNE | Skylark Field (ILE) | Killeen, Texas, United States | |
| 13 | 120.26 miles (193.54 km) NNE | Hood Army Airfield (HLR) | Fort Hood / Killeen, Texas, United States | |
| 14 | 124.96 miles (201.11 km) NNW | Curtis Field (BBD) | Brady, Texas, United States | |
| 15 | 126.31 miles (203.27 km) SSE | Alice International Airport (ALI) | Alice, Texas, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,113.84 miles (17,885.94 km) ESE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,887.68 miles (17,521.99 km) SW | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 3 | 10,820.69 miles (17,414.18 km) ESE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 4 | 10,716.83 miles (17,247.02 km) ESE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 5 | 10,709.53 miles (17,235.27 km) ESE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,466.62 miles (16,844.35 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 7 | 10,453.81 miles (16,823.73 km) W | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 8 | 10,449.48 miles (16,816.77 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 9 | 10,442.04 miles (16,804.80 km) W | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 10 | 10,441.09 miles (16,803.26 km) W | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,435.56 miles (16,794.37 km) W | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 12 | 10,432.01 miles (16,788.65 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 13 | 10,418.56 miles (16,767.00 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 14 | 10,415.54 miles (16,762.14 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 15 | 10,399.08 miles (16,735.65 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |