Nonstop flight route between Alton, Illinois, United States and Humboldt, Iowa, United States:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(42°44'9"N by 94°14'43"W)
Distance from ALN to HUD:
344.61 miles (554.60 km)
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Jump to:
- About this route
- ALN Airport Information
- HUD Airport Information
- Facts about ALN
- Facts about HUD
- 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 HUD
- List of Nearest Airports to HUD
- Map of Furthest Airports from HUD
- List of Furthest Airports from HUD
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Humboldt Municipal Airport (HUD), Humboldt, Iowa, United States would travel a Great Circle distance of 345 miles (or 555 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 Humboldt Municipal 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: | HUD / |
| Airport Names: |
|
| Location: | Humboldt, Iowa, United States |
| GPS Coordinates: | 42°44'9"N by 94°14'43"W |
| Area Served: | Humboldt, Iowa |
| Operator/Owner: | City of Humboldt |
| Airport Type: | Public |
| Elevation: | 1093 feet (333 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HUD |
| More Information: | HUD Maps & Info |
Facts about St. Louis Regional Airport (ALN):
- 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.
- 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.
- Civic Memorial Airport opened in 1946 and received its current name in 1984.
- The 2,250 acres airfield sits at 544 ft MSL.
- 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.
- St. Louis Regional Airport (ALN) has 2 runways.
Facts about Humboldt Municipal Airport (HUD):
- The furthest airport from Humboldt Municipal Airport (HUD) is Margaret River Airport (MGV), which is located 10,745 miles (17,292 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Humboldt Municipal Airport (HUD) is Fort Dodge Regional Airport (FOD), which is located only 13 miles (21 kilometers) SSE of HUD.
- Humboldt Municipal Airport (HUD) currently has only 1 runway.
- In addition to being known as "Humboldt Municipal Airport", another name for HUD is "0K7".
| 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 | 13.07 miles (21.03 km) SSE | Fort Dodge Regional Airport (FOD) | Fort Dodge, Iowa, United States | |
| 2 | 23.65 miles (38.05 km) N | Algona Municipal Airport (AXG) | Algona, Iowa, United States | |
| 3 | 28.19 miles (45.37 km) SE | Webster City Municipal Airport (EBS) | Webster City, Iowa, United States | |
| 4 | 46.61 miles (75.01 km) NE | Forest City Municipal Airport (FXY) | Forest City, Iowa, United States | |
| 5 | 51.47 miles (82.84 km) W | Storm Lake Municipal Airport (SLB) | Storm Lake, Iowa, United States | |
| 6 | 51.60 miles (83.05 km) SSE | Boone Municipal Airport (BNW) | Boone, Iowa, United States | |
| 7 | 54.65 miles (87.95 km) ENE | Mason City Municipal Airport (MCW) | Mason City, Iowa, United States | |
| 8 | 55.16 miles (88.77 km) SSW | Arthur N. Neu Airport (CIN) | Carroll, Iowa, United States | |
| 9 | 56.79 miles (91.39 km) WNW | Spencer Municipal Airport (SPW) | Spencer, Iowa, United States | |
| 10 | 60.47 miles (97.32 km) SSE | Ames Municipal Airport (AMW) | Ames, Iowa, United States | |
| 11 | 62.89 miles (101.22 km) S | Perry Municipal Airport (PRO) | Perry, Iowa, United States | |
| 12 | 63.31 miles (101.88 km) N | Fairmont Municipal Airport (FRM) | Fairmont, Minnesota, United States | |
| 13 | 73.36 miles (118.06 km) NNW | Jackson Municipal Airport (MJQ) | Jackson, Minnesota, United States | |
| 14 | 77.72 miles (125.08 km) SW | Denison Municipal Airport (DNS) | Denison, Iowa, United States | |
| 15 | 78.83 miles (126.87 km) NE | Albert Lea Municipal Airport (AEL) | Albert Lea, Minnesota, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,744.50 miles (17,291.56 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,721.20 miles (17,254.05 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,703.90 miles (17,226.22 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 10,696.65 miles (17,214.55 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 10,653.46 miles (17,145.03 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,642.02 miles (17,126.64 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 7 | 10,640.09 miles (17,123.51 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 10,629.96 miles (17,107.23 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 10,610.16 miles (17,075.36 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 10 | 10,609.06 miles (17,073.58 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 11 | 10,563.42 miles (17,000.13 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 10,535.64 miles (16,955.43 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,518.12 miles (16,927.24 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,511.16 miles (16,916.03 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,483.50 miles (16,871.52 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |