Nonstop flight route between Duluth, Minnesota, United States and Alton, Illinois, United States:
Departure Airport:
(46°50'31"N by 92°11'36"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from DLH to ALN:
560.02 miles (901.27 km)
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Jump to:
- About this route
- DLH Airport Information
- ALN Airport Information
- Facts about DLH
- Facts about ALN
- Map of Nearest Airports to DLH
- List of Nearest Airports to DLH
- Map of Furthest Airports from DLH
- List of Furthest Airports from DLH
- 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 Duluth International Airport (DLH), Duluth, Minnesota, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 560 miles (or 901 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 Duluth 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: | DLH / KDLH |
| Airport Name: | Duluth International Airport |
| Location: | Duluth, Minnesota, United States |
| GPS Coordinates: | 46°50'31"N by 92°11'36"W |
| Area Served: | Duluth, Minnesota and Superior, Wisconsin (Twin Ports) |
| Operator/Owner: | City of Duluth, Minnesota |
| Airport Type: | Public |
| Elevation: | 1428 feet (435 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from DLH |
| More Information: | DLH 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 Duluth International Airport (DLH):
- In 1961, the Duluth Airport Authority Board moves to rename the Williamson–Johnson Municipal Airport, the Duluth International Airport.
- The original terminal building was built in 1954, south of Runway 9–27, on the west side of Runway 3–21 and served the airport for nearly 20 years.
- Duluth International Airport handled 312,000 passengers last year.
- Duluth International Airport is a city-owned, public-use, joint civil-military airport located five nautical miles northwest of the central business district of Duluth, a city in Saint Louis County, Minnesota, United States.
- The closest airport to Duluth International Airport (DLH) is Richard I. Bong Airport (SUW), which is located only 12 miles (19 kilometers) SSE of DLH.
- Duluth International Airport (DLH) has 2 runways.
- The furthest airport from Duluth International Airport (DLH) is Margaret River Airport (MGV), which is located 10,759 miles (17,315 kilometers) away in Margaret River, Western Australia, Australia.
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.
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- 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.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11.53 miles (18.55 km) SSE | Richard I. Bong Airport (SUW) | Superior, Wisconsin, United States |     |
| 2 | 48.33 miles (77.78 km) NW | Range Regional Airport (HIB) | Hibbing, Minnesota, United States | |
| 3 | 63.72 miles (102.55 km) ESE | John F. Kennedy Memorial Airport (ASX) | Ashland, Wisconsin, United States | |
| 4 | 66.78 miles (107.47 km) SSE | Sawyer County Airport (HYR) | Hayward, Wisconsin, United States | |
| 5 | 67.02 miles (107.86 km) WNW | Grand Rapids - Itasca County Airport (GPZ) | Grand Rapids, Minnesota, United States | |
| 6 | 69.96 miles (112.59 km) NNE | Ely Municipal Airport (LYU) | Ely, Minnesota, United States | |
| 7 | 75.56 miles (121.60 km) SSW | Grantsburg Municipal Airport (GTG) | Grantsburg, Wisconsin, United States | |
| 8 | 97.03 miles (156.16 km) WSW | Brainerd Lakes Regional Airport (BRD) | Brainerd, Minnesota, United States | |
| 9 | 100.13 miles (161.15 km) ESE | Gogebic-Iron County Airport (IWD) | Ironwood, Michigan, United States | |
| 10 | 100.30 miles (161.42 km) SSE | Rice Lake Regional Airport (RIE) | Rice Lake, Wisconsin, United States | |
| 11 | 104.23 miles (167.74 km) SE | Park Falls Municipal Airport (PKF) | Park Falls, Wisconsin, United States | |
| 12 | 108.21 miles (174.15 km) S | Amery Municipal Airport (AHH) | Amery, Wisconsin, United States | |
| 13 | 108.54 miles (174.68 km) SSW | L.O. Simenstad Municipal Airport (OEO) | Osceola, Wisconsin, United States | |
| 14 | 109.19 miles (175.72 km) NE | Grand Marais/Cook County Airport (GRM) | Grand Marais, Minnesota, United States | |
| 15 | 118.24 miles (190.29 km) S | New Richmond Regional Airport (RNH) | New Richmond, Wisconsin, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,759.04 miles (17,314.95 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,735.04 miles (17,276.33 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,728.04 miles (17,265.06 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 10,709.03 miles (17,234.47 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 10,682.26 miles (17,191.38 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 10,651.59 miles (17,142.03 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 10,641.22 miles (17,125.34 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 10,636.06 miles (17,117.03 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 9 | 10,630.15 miles (17,107.52 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 10,589.55 miles (17,042.18 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 10,527.60 miles (16,942.48 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 10,494.44 miles (16,889.12 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 10,487.87 miles (16,878.55 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 10,478.19 miles (16,862.97 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,447.26 miles (16,813.20 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 | |