Nonstop flight route between Harrisburg, Pennsylvania, United States and Alton, Illinois, United States:
Departure Airport:
(40°11'35"N by 76°45'47"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from MDT to ALN:
712.75 miles (1,147.06 km)
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Jump to:
- About this route
- MDT Airport Information
- ALN Airport Information
- Facts about MDT
- Facts about ALN
- Map of Nearest Airports to MDT
- List of Nearest Airports to MDT
- Map of Furthest Airports from MDT
- List of Furthest Airports from MDT
- 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 Harrisburg International Airport (MDT), Harrisburg, Pennsylvania, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 713 miles (or 1,147 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 Harrisburg International 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: | MDT / KMDT |
| Airport Name: | Harrisburg International Airport |
| Location: | Harrisburg, Pennsylvania, United States |
| GPS Coordinates: | 40°11'35"N by 76°45'47"W |
| Area Served: | Harrisburg, Pennsylvania |
| Airport Type: | Public |
| Elevation: | 310 feet (94 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from MDT |
| More Information: | MDT 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 Harrisburg International Airport (MDT):
- Harrisburg International Airport has freight-forwarding capability.
- About 1,400 people work in the system of Harrisburg International Airport.
- The terminal has 12 gates and is a pier finger lay out near the middle of the airfield, almost parallel to the runway.
- The airport code MDT refers to Middletown, a suburb of Harrisburg.
- Because of Harrisburg International Airport's relatively low elevation of 310 feet, planes can take off or land at Harrisburg 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 closest airport to Harrisburg International Airport (MDT) is Capital City Airport (HAR), which is located only 5 miles (8 kilometers) WNW of MDT.
- Harrisburg International Airport (MDT) currently has only 1 runway.
- The furthest airport from Harrisburg International Airport (MDT) is Margaret River Airport (MGV), which is located 11,654 miles (18,755 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Louis Regional Airport (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.
- 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.
- 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.
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- In the spring of 2004 the airport was at the center of a scandal.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 4.94 miles (7.95 km) WNW | Capital City Airport (HAR) | Harrisburg, Pennsylvania, United States |     |
| 2 | 19.58 miles (31.51 km) NNE | Muir Army Airfield (MUI) | Fort Indiantown Gap, Pennsylvania, United States | |
| 3 | 19.94 miles (32.09 km) SSW | York Airport (THV) | York, Pennsylvania, United States | |
| 4 | 25.24 miles (40.62 km) E | Lancaster Airport (LNS) | Lancaster, Pennsylvania, United States | |
| 5 | 36.37 miles (58.54 km) SW | Gettysburg Regional Airport (GTY) | Gettysburg, Pennsylvania, United States | |
| 6 | 43.72 miles (70.35 km) N | Penn Valley Airport (SEG) | Selinsgrove, Pennsylvania, United States | |
| 7 | 43.97 miles (70.77 km) ENE | Reading Regional Airport (RDG) | Reading, Pennsylvania, United States | |
| 8 | 49.71 miles (80.00 km) ESE | Chester County G. O. Carlson Airport (CTH) | Coatesville, Pennsylvania, United States | |
| 9 | 56.42 miles (90.80 km) NW | Mifflin County Airport (RED) | Reedsville, Pennsylvania, United States | |
| 10 | 59.31 miles (95.45 km) SSE | Phillips Army Airfield (APG) | Aberdeen Proving Ground, Maryland, United States | |
| 11 | 61.01 miles (98.19 km) WSW | Hagerstown Regional Airport (HGR) | Hagerstown, Maryland, United States | |
| 12 | 62.64 miles (100.81 km) SSW | Frederick Municipal Airport (FDK) | Frederick, Maryland, United States | |
| 13 | 62.75 miles (100.98 km) SSE | Martin State Airport (MTN) | Baltimore, Maryland, United States | |
| 14 | 63.74 miles (102.59 km) E | Heritage Field (PTW) | Pottstown, Pennsylvania, United States | |
| 15 | 64.00 miles (103.00 km) ESE | Brandywine Airport (OQN) | West Chester, Pennsylvania, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,653.61 miles (18,754.62 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,629.74 miles (18,716.20 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,618.47 miles (18,698.07 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,604.07 miles (18,674.90 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,561.62 miles (18,606.58 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,548.56 miles (18,585.56 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,538.06 miles (18,568.66 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,527.04 miles (18,550.93 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,524.58 miles (18,546.97 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,483.74 miles (18,481.24 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,415.57 miles (18,371.54 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,388.18 miles (18,327.46 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,368.53 miles (18,295.83 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,368.20 miles (18,295.30 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,319.06 miles (18,216.21 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 | |