Nonstop flight route between Dillon, Montana, United States and Alton, Illinois, United States:
Departure Airport:
(45°15'19"N by 112°33'8"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from DLN to ALN:
1,230.18 miles (1,979.78 km)
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- About this route
- DLN Airport Information
- ALN Airport Information
- Facts about DLN
- Facts about ALN
- Map of Nearest Airports to DLN
- List of Nearest Airports to DLN
- Map of Furthest Airports from DLN
- List of Furthest Airports from DLN
- 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 Dillon Airport (DLN), Dillon, Montana, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 1,230 miles (or 1,980 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 Dillon 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: | DLN / KDLN |
| Airport Name: | Dillon Airport |
| Location: | Dillon, Montana, United States |
| GPS Coordinates: | 45°15'19"N by 112°33'8"W |
| Area Served: | Dillon, Montana |
| Operator/Owner: | Beaverhead County |
| Airport Type: | Public |
| Elevation: | 5241 feet (1,597 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from DLN |
| More Information: | DLN 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 Dillon Airport (DLN):
- The furthest airport from Dillon Airport (DLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,660 miles (17,155 kilometers) away in Rodrigues Island, Mauritius.
- Dillon Airport (DLN) has 2 runways.
- The closest airport to Dillon Airport (DLN) is Bert Mooney Airport (BTM), which is located 48 miles (78 kilometers) N of DLN.
- Because of Dillon Airport's high elevation of 5,241 feet, planes must typically fly at a faster airspeed in order to takeoff or land at DLN. Combined with a high temperature, this could make DLN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
Facts about St. Louis Regional Airport (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.
- 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.
- 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.
- The 2,250 acres airfield sits at 544 ft MSL.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 48.40 miles (77.89 km) N | Bert Mooney Airport (BTM) | Butte, Montana, United States |     |
| 2 | 65.34 miles (105.16 km) W | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 3 | 76.81 miles (123.61 km) ENE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 77.26 miles (124.34 km) SSE | Dubois Municipal Airport (DBS) | Dubois, Idaho, United States | |
| 5 | 80.33 miles (129.27 km) ESE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 6 | 95.92 miles (154.36 km) WSW | Challis Airport (CHL) | Challis, Idaho, United States | |
| 7 | 97.30 miles (156.59 km) NNE | Helena Regional Airport (HLN) | Helena, Montana, United States | |
| 8 | 106.47 miles (171.35 km) ENE | Mission Field (LVM) | Livingston, Montana, United States | |
| 9 | 122.66 miles (197.41 km) SSE | Idaho Falls Regional Airport (IDA) | Idaho Falls, Idaho, United States | |
| 10 | 136.39 miles (219.50 km) NNW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 11 | 144.85 miles (233.11 km) SE | Jackson Hole Airport (JAC) | Jackson, Wyoming, United States | |
| 12 | 148.49 miles (238.97 km) SW | Friedman Memorial Airport (SUN) | Hailey, Idaho, United States | |
| 13 | 162.08 miles (260.84 km) S | Pocatello Regional Airport (PIH) | Pocatello, Idaho, United States | |
| 14 | 163.89 miles (263.76 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 15 | 168.49 miles (271.16 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,659.64 miles (17,154.99 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,647.97 miles (17,136.20 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,633.54 miles (17,112.98 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 4 | 10,633.50 miles (17,112.91 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 5 | 10,621.79 miles (17,094.06 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,534.32 miles (16,953.30 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,453.24 miles (16,822.82 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,428.24 miles (16,782.58 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,334.79 miles (16,632.19 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,332.38 miles (16,628.32 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,318.26 miles (16,605.58 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,292.87 miles (16,564.73 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,279.79 miles (16,543.67 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,261.94 miles (16,514.94 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,240.54 miles (16,480.51 km) SSE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 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 | |