Nonstop flight route between Alton, Illinois, United States and Idiofa, Democratic Republic of the Congo:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(5°0'0"S by 19°36'0"E)
Distance from ALN to IDF:
7,488.73 miles (12,051.91 km)
Share this route:
Jump to:
- About this route
- ALN Airport Information
- IDF Airport Information
- Facts about ALN
- Facts about IDF
- 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 IDF
- List of Nearest Airports to IDF
- Map of Furthest Airports from IDF
- List of Furthest Airports from IDF
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Idiofa Airport (IDF), Idiofa, Democratic Republic of the Congo would travel a Great Circle distance of 7,489 miles (or 12,052 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 large distance between St. Louis Regional Airport and Idiofa Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between St. Louis Regional Airport and Idiofa Airport. You'll see that it will travel the same route of the red line on this map!
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: | IDF / FZCB |
| Airport Name: | Idiofa Airport |
| Location: | Idiofa, Democratic Republic of the Congo |
| GPS Coordinates: | 5°0'0"S by 19°36'0"E |
| Airport Type: | Public |
| Elevation: | 2299 feet (701 meters) |
| View all routes: | Routes from IDF |
| More Information: | IDF 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.
- 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.
Facts about Idiofa Airport (IDF):
- The furthest airport from Idiofa Airport (IDF) is Cassidy International Airport (CXI), which is nearly antipodal to Idiofa Airport (meaning Idiofa Airport is almost on the exact opposite side of the Earth from Cassidy International Airport), and is located 12,141 miles (19,539 kilometers) away in Christmas Island, Kiribati.
- The closest airport to Idiofa Airport (IDF) is Kikwit Airport (KKW), which is located 56 miles (90 kilometers) W of IDF.
| 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 | 56.11 miles (90.30 km) W | Kikwit Airport (KKW) | Kikwit, Democratic Republic of the Congo | |
| 2 | 74.28 miles (119.54 km) NE | Basongo Airport (BAN) | Basongo, Democratic Republic of the Congo | |
| 3 | 185.79 miles (298.99 km) SSE | Dundo Airport (DUE) | Dundo, Angola | |
| 4 | 192.31 miles (309.50 km) NW | Bandundu Airport (FDU) | Bandundu, Democratic Republic of the Congo | |
| 5 | 205.67 miles (331.00 km) NW | Nioki Airport (NIO) | Nioki, Democratic Republic of the Congo | |
| 6 | 206.91 miles (332.98 km) ESE | Kananga Airport (KGA) | Kananga, Democratic Republic of the Congo | |
| 7 | 223.15 miles (359.13 km) SSE | Nzagi Airport (NZA) | Nzagi (Andrada), Angola | |
| 8 | 229.57 miles (369.46 km) NNW | Inongo Airport (INO) | Inongo, Democratic Republic of the Congo | |
| 9 | 248.75 miles (400.32 km) N | Basango Mboliasa Airport (KRZ) | Kiri, Democratic Republic of the Congo | |
| 10 | 250.17 miles (402.60 km) SSE | Lucapa Airport (LBZ) | Lukapa, Angola | |
| 11 | 260.08 miles (418.56 km) E | Lusambo Airport (LBO) | Lusambo, Democratic Republic of the Congo | |
| 12 | 283.71 miles (456.58 km) ESE | Mbuji Mayi Airport (MJM) | Mbuji Mayi, Democratic Republic of the Congo | |
| 13 | 283.76 miles (456.67 km) SSW | Aeroporto de Cafunfo (CFF) | Cafunfo, Angola | |
| 14 | 287.12 miles (462.07 km) ENE | Lodja Airport (LJA) | Lodja, Democratic Republic of the Congo | |
| 15 | 289.28 miles (465.55 km) W | N'djili Airport (FIH) | Kinshasa, Democratic Republic of the Congo | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,140.82 miles (19,538.70 km) NW | Cassidy International Airport (CXI) | Christmas Island, Kiribati | |
| 2 | 11,489.63 miles (18,490.72 km) NE | Canton Island Airport (CIS) | Canton Island, Kiribati | |
| 3 | 11,417.32 miles (18,374.36 km) NE | Johnston Atoll Airport (JON) | Johnston Atoll, U.S. Minor Outlying Islands | |
| 4 | 11,377.14 miles (18,309.69 km) NNW | Kona International Airport at Keāhole (KOA) | Kailua / Kona, Hawaii, United States | |
| 5 | 11,373.30 miles (18,303.51 km) S | Manihiki Island Airport (MHX) | Manihiki Island, Cook Islands | |
| 6 | 11,364.16 miles (18,288.81 km) NNW | Pōhakuloa Training Area (BSF) | Camp Pohakuloa, Hawaii, United States | |
| 7 | 11,357.88 miles (18,278.69 km) NNW | Hilo International Airport (ITO) | Hilo, Hawaii, United States | |
| 8 | 11,352.58 miles (18,270.16 km) NNW | Waimea-Kohala Airport (MUE) | Kamuela, Hawaii, United States | |
| 9 | 11,338.84 miles (18,248.06 km) NNW | Upolu Airport (UPP) | Hawi, Hawaii, United States | |
| 10 | 11,321.84 miles (18,220.69 km) NNW | Lanai Airport (LNY) | Lanai City, Hawaii, United States | |
| 11 | 11,306.50 miles (18,196.00 km) NNW | Kahului Airport (OGG) | Kahului, Hawaii, United States | |
| 12 | 11,306.45 miles (18,195.93 km) NNW | Hana Airport (HNM) | Hana, Hawaii, United States | |
| 13 | 11,305.88 miles (18,195.01 km) NNW | Kapalua Airport (JHM) | Lahaina, Hawaii, United States | |
| 14 | 11,299.31 miles (18,184.44 km) N | Kalaeloa Airport (NAX) | Kapolei, Hawaii, United States | |
| 15 | 11,298.99 miles (18,183.91 km) N | Molokai Airport (MKK) | Kaunakakai, Hawaii, United States | |