Nonstop flight route between Impfondo, Republic of the Congo and Chesterfield, Missouri, United States:
Departure Airport:
(1°35'21"N by 18°2'42"E)
Arrival Airport:
(38°39'43"N by 90°39'6"W)
Distance from ION to SUS:
7,148.87 miles (11,504.97 km)
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- About this route
- ION Airport Information
- SUS Airport Information
- Facts about ION
- Facts about SUS
- Map of Nearest Airports to ION
- List of Nearest Airports to ION
- Map of Furthest Airports from ION
- List of Furthest Airports from ION
- Map of Nearest Airports to SUS
- List of Nearest Airports to SUS
- Map of Furthest Airports from SUS
- List of Furthest Airports from SUS
About this route:
A direct, nonstop flight between Impfondo Airport (ION), Impfondo, Republic of the Congo and Spirit of St. Louis Airport (SUS), Chesterfield, Missouri, United States would travel a Great Circle distance of 7,149 miles (or 11,505 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 Impfondo Airport and Spirit of St. Louis 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 Impfondo Airport and Spirit of St. Louis Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ION / FCOI |
| Airport Name: | Impfondo Airport |
| Location: | Impfondo, Republic of the Congo |
| GPS Coordinates: | 1°35'21"N by 18°2'42"E |
| Area Served: | Impfondo, Republic of the Congo |
| Elevation: | 1099 feet (335 meters) |
| View all routes: | Routes from ION |
| More Information: | ION Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SUS / KSUS |
| Airport Name: | Spirit of St. Louis Airport |
| Location: | Chesterfield, Missouri, United States |
| GPS Coordinates: | 38°39'43"N by 90°39'6"W |
| Operator/Owner: | St. Louis County |
| Airport Type: | Public |
| Elevation: | 463 feet (141 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SUS |
| More Information: | SUS Maps & Info |
Facts about Impfondo Airport (ION):
- The closest airport to Impfondo Airport (ION) is Bétou Airport (BTB), which is located 106 miles (170 kilometers) NNE of ION.
- The furthest airport from Impfondo Airport (ION) is Cassidy International Airport (CXI), which is nearly antipodal to Impfondo Airport (meaning Impfondo Airport is almost on the exact opposite side of the Earth from Cassidy International Airport), and is located 12,034 miles (19,367 kilometers) away in Christmas Island, Kiribati.
Facts about Spirit of St. Louis Airport (SUS):
- The closest airport to Spirit of St. Louis Airport (SUS) is Lambert–St. Louis International Airport (STL), which is located only 17 miles (27 kilometers) ENE of SUS.
- Spirit of St. Louis Airport (SUS) has 2 runways.
- In 2007, the airport finished a multi-million dollar expansion project to add a parallel taxiway to the north of 26R/8L.
- The furthest airport from Spirit of St. Louis Airport (SUS) is Margaret River Airport (MGV), which is located 10,971 miles (17,656 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Spirit of St. Louis Airport's relatively low elevation of 463 feet, planes can take off or land at Spirit of St. Louis 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 105.69 miles (170.09 km) NNE | Bétou Airport (BTB) | Betou, Republic of the Congo |     |
| 2 | 109.57 miles (176.33 km) S | Mbandaka Airport (MDK) | Mbandaka, Democratic Republic of the Congo | |
| 3 | 123.06 miles (198.05 km) ESE | Basankusu Airport (BSU) | Basankusu, Democratic Republic of the Congo | |
| 4 | 196.82 miles (316.75 km) N | Bangui M'Poko International Airport (BGF) | Bangui, Central African Republic | |
| 5 | 203.10 miles (326.85 km) WSW | Makoua Airport (MKJ) | Makoua, Republic of the Congo | |
| 6 | 205.96 miles (331.47 km) SW | Owando Airport (FTX) | Owando, Republic of the Congo | |
| 7 | 220.12 miles (354.26 km) SSE | Basango Mboliasa Airport (KRZ) | Kiri, Democratic Republic of the Congo | |
| 8 | 234.90 miles (378.04 km) ESE | Boende Airport (BNB) | Boende, Democratic Republic of the Congo | |
| 9 | 239.38 miles (385.24 km) NW | Berbérati Airport (BBT) | Berbérati, Central African Republic | |
| 10 | 241.72 miles (389.00 km) E | Lisala Airport (LIQ) | Lisala, Democratic Republic of the Congo | |
| 11 | 243.54 miles (391.95 km) SW | Oyo Ollombo Airport (OLL) | Oyo, Republic of the Congo, Republic of the Congo | |
| 12 | 244.93 miles (394.17 km) S | Inongo Airport (INO) | Inongo, Democratic Republic of the Congo | |
| 13 | 255.67 miles (411.47 km) N | Bossembélé Airport (BEM) | Bossembélé, Central African Republic | |
| 14 | 258.17 miles (415.49 km) SW | Boundji Airport (BOE) | Boundji, Republic of the Congo | |
| 15 | 268.74 miles (432.49 km) WSW | Kelle Airport (KEE) | Kelle, Republic of the Congo | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,034.00 miles (19,366.80 km) NW | Cassidy International Airport (CXI) | Christmas Island, Kiribati | |
| 2 | 11,825.86 miles (19,031.83 km) S | Manihiki Island Airport (MHX) | Manihiki Island, Cook Islands | |
| 3 | 11,758.70 miles (18,923.75 km) E | Canton Island Airport (CIS) | Canton Island, Kiribati | |
| 4 | 11,426.23 miles (18,388.69 km) SSE | Fitiuta Airport (FTI) | Fiti‘uta, American Samoa, United States | |
| 5 | 11,422.43 miles (18,382.58 km) SSE | Tau Airport (TAV) | Tau, American Samoa | |
| 6 | 11,419.50 miles (18,377.85 km) SSE | Ofu Airport (OFU) | Ofu, American Samoa | |
| 7 | 11,375.96 miles (18,307.79 km) SE | Pago Pago International Airport (PPG) | Pago Pago, American Samoa | |
| 8 | 11,357.64 miles (18,278.31 km) SE | Fagali'i Airport (FGI) | Apia, Samoa | |
| 9 | 11,347.24 miles (18,261.57 km) SE | Faleolo International Airport (APW) | Apia, Upolu Island, Samoa | |
| 10 | 11,340.97 miles (18,251.48 km) SE | Maota (Salelologa) Airport (MXS) | Maota, Samoa | |
| 11 | 11,336.73 miles (18,244.66 km) SE | Asau Airport (AAU) | Asau, Samoa | |
| 12 | 11,217.19 miles (18,052.27 km) SSW | Maupiti Airport (MAU) | Maupiti, Leeward Islands, French Polynesia | |
| 13 | 11,197.81 miles (18,021.08 km) SSW | Bora Bora Airport (BOB) | Bora Bora, French Polynesia | |
| 14 | 11,171.90 miles (17,979.39 km) SE | Wallis Island (WLS) | Wallis and Futuna Islands | |
| 15 | 11,155.81 miles (17,953.50 km) SW | Huahine – Fare Airport (HUH) | Huahine, Society Islands, French Polynesia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.73 miles (26.93 km) ENE | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 2 | 27.50 miles (44.26 km) ESE | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 3 | 36.24 miles (58.32 km) ENE | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 4 | 44.83 miles (72.15 km) E | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 5 | 69.63 miles (112.05 km) E | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 6 | 70.90 miles (114.10 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 7 | 81.34 miles (130.90 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| 8 | 85.17 miles (137.07 km) W | Columbia Regional Airport (COU) | Columbia, Missouri, United States | |
| 9 | 91.08 miles (146.58 km) E | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 10 | 93.12 miles (149.85 km) NNW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 11 | 96.87 miles (155.90 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 12 | 97.50 miles (156.92 km) SE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 13 | 99.77 miles (160.56 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 14 | 102.86 miles (165.54 km) SW | Waynesville-St. Robert Regional Airport (TBN) | Fort Leonard Wood, Missouri, United States | |
| 15 | 108.92 miles (175.29 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,971.17 miles (17,656.34 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,949.13 miles (17,620.87 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,926.55 miles (17,584.53 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,923.06 miles (17,578.91 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,896.68 miles (17,536.47 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,881.10 miles (17,511.39 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,872.02 miles (17,496.77 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,869.55 miles (17,492.80 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,847.98 miles (17,458.09 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,835.21 miles (17,437.54 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,828.15 miles (17,426.17 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,816.43 miles (17,407.31 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,781.73 miles (17,351.47 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,781.61 miles (17,351.28 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 15 | 10,777.09 miles (17,344.00 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |