Nonstop flight route between Alton, Illinois, United States and Butte, Montana, United States:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(45°57'16"N by 112°29'51"W)
Distance from ALN to BTM:
1,239.36 miles (1,994.56 km)
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Jump to:
- About this route
- ALN Airport Information
- BTM Airport Information
- Facts about ALN
- Facts about BTM
- 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 BTM
- List of Nearest Airports to BTM
- Map of Furthest Airports from BTM
- List of Furthest Airports from BTM
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Bert Mooney Airport (BTM), Butte, Montana, United States would travel a Great Circle distance of 1,239 miles (or 1,995 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 Bert Mooney 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: | BTM / KBTM |
| Airport Name: | Bert Mooney Airport |
| Location: | Butte, Montana, United States |
| GPS Coordinates: | 45°57'16"N by 112°29'51"W |
| Area Served: | Butte, Montana |
| Operator/Owner: | Bert Mooney Airport Authority |
| Airport Type: | Public |
| Elevation: | 5550 feet (1,692 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from BTM |
| More Information: | BTM Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- West Star Aviation is the largest fixed base operations company at the airport.
- 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.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
- 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.
Facts about Bert Mooney Airport (BTM):
- Bert Mooney Airport (BTM) has 2 runways.
- Bert Mooney Airport covers 890 acres at an elevation of 5,550 feet.
- The furthest airport from Bert Mooney Airport (BTM) is Sir Gaëtan Duval Airport (RRG), which is located 10,611 miles (17,077 kilometers) away in Rodrigues Island, Mauritius.
- The closest airport to Bert Mooney Airport (BTM) is Dillon Airport (DLN), which is located 48 miles (78 kilometers) S of BTM.
- Because of Bert Mooney Airport's high elevation of 5,550 feet, planes must typically fly at a faster airspeed in order to takeoff or land at BTM. Combined with a high temperature, this could make BTM a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
| 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 | 48.40 miles (77.89 km) S | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 2 | 51.31 miles (82.58 km) NNE | Helena Regional Airport (HLN) | Helena, Montana, United States | |
| 3 | 65.88 miles (106.03 km) E | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 88.21 miles (141.95 km) SW | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 5 | 100.23 miles (161.31 km) E | Mission Field (LVM) | Livingston, Montana, United States | |
| 6 | 100.84 miles (162.28 km) NW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 7 | 110.22 miles (177.38 km) SE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 8 | 118.30 miles (190.39 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 9 | 123.77 miles (199.19 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 10 | 124.58 miles (200.50 km) S | Dubois Municipal Airport (DBS) | Dubois, Idaho, United States | |
| 11 | 129.54 miles (208.47 km) SW | Challis Airport (CHL) | Challis, Idaho, United States | |
| 12 | 162.76 miles (261.93 km) ENE | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 13 | 169.96 miles (273.52 km) S | Idaho Falls Regional Airport (IDA) | Idaho Falls, Idaho, United States | |
| 14 | 181.06 miles (291.39 km) N | Shelby Airport (SBX) | Shelby, Montana, United States | |
| 15 | 182.55 miles (293.78 km) NNW | Glacier Park International Airport (FCA) | Kalispell, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,611.48 miles (17,077.48 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,603.41 miles (17,064.49 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,597.83 miles (17,055.51 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 4 | 10,587.46 miles (17,038.83 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,577.06 miles (17,022.09 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,500.55 miles (16,898.95 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,414.03 miles (16,759.72 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,390.21 miles (16,721.39 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,300.56 miles (16,577.10 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,296.78 miles (16,571.02 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,283.70 miles (16,549.96 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,251.57 miles (16,498.27 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,240.20 miles (16,479.97 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,224.34 miles (16,454.44 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,202.20 miles (16,418.81 km) SE | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |