Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Iki, Iki Island, Japan:
Departure Airport:
(38°34'14"N by 90°9'21"W)
Arrival Airport:
(33°44'57"N by 129°47'8"E)
Distance from CPS to IKI:
6,822.61 miles (10,979.89 km)
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Jump to:
- About this route
- CPS Airport Information
- IKI Airport Information
- Facts about CPS
- Facts about IKI
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
- Map of Nearest Airports to IKI
- List of Nearest Airports to IKI
- Map of Furthest Airports from IKI
- List of Furthest Airports from IKI
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Iki Airport (IKI), Iki, Iki Island, Japan would travel a Great Circle distance of 6,823 miles (or 10,980 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 Downtown Airport and Iki 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 Downtown Airport and Iki Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | CPS / KCPS |
| Airport Name: | St. Louis Downtown Airport |
| Location: | Cahokia, Illinois (near St. Louis), United States |
| GPS Coordinates: | 38°34'14"N by 90°9'21"W |
| Area Served: | Greater St. Louis |
| Operator/Owner: | Bi-State Development Agency |
| Airport Type: | Public |
| Elevation: | 413 feet (126 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from CPS |
| More Information: | CPS Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | IKI / RJDB |
| Airport Names: |
|
| Location: | Iki, Iki Island, Japan |
| GPS Coordinates: | 33°44'57"N by 129°47'8"E |
| Area Served: | Iki, Nagasaki, Japan |
| Operator/Owner: | Government |
| Airport Type: | Public |
| Elevation: | 41 feet (12 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from IKI |
| More Information: | IKI Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
- St. Louis Downtown Airport (CPS) has 3 runways.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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 Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
Facts about Iki Airport (IKI):
- Because of Iki Airport's relatively low elevation of 41 feet, planes can take off or land at Iki 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.
- In addition to being known as "Iki Airport", other names for IKI include "壱岐空港" and "Iki Kūkō".
- Iki Airport (IKI) currently has only 1 runway.
- The closest airport to Iki Airport (IKI) is Fukuoka Airport (FUK), which is located 40 miles (64 kilometers) ESE of IKI.
- The furthest airport from Iki Airport (IKI) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Iki Airport (meaning Iki Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,275 miles (19,755 kilometers) away in Rio Grande, Brazil.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.47 miles (26.50 km) NW | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States |     |
| 2 | 17.42 miles (28.04 km) E | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 3 | 22.85 miles (36.78 km) NNE | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 4 | 27.50 miles (44.26 km) WNW | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 5 | 45.73 miles (73.59 km) ENE | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 6 | 64.55 miles (103.88 km) E | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 7 | 72.26 miles (116.30 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 8 | 73.57 miles (118.39 km) SE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 9 | 83.94 miles (135.09 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 10 | 91.63 miles (147.46 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 11 | 92.63 miles (149.07 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 12 | 98.29 miles (158.19 km) SSE | Cape Girardeau Regional Airport (CGI) | Cape Girardeau, Missouri, United States | |
| 13 | 108.03 miles (173.86 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| 14 | 109.88 miles (176.83 km) NNW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 15 | 111.34 miles (179.18 km) NE | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,998.38 miles (17,700.14 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,976.37 miles (17,664.71 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,953.82 miles (17,628.43 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,950.15 miles (17,622.51 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,924.13 miles (17,580.63 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,908.52 miles (17,555.52 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,899.45 miles (17,540.92 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,897.05 miles (17,537.06 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,874.80 miles (17,501.25 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,862.63 miles (17,481.67 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,855.26 miles (17,469.80 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,843.70 miles (17,451.20 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,809.16 miles (17,395.61 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,809.10 miles (17,395.51 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 15 | 10,804.00 miles (17,387.31 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 39.94 miles (64.28 km) ESE | Fukuoka Airport (FUK) | Fukuoka, Japan | |
| 2 | 51.01 miles (82.09 km) SE | Saga Airport (HSG) | Saga, Kyūshū, Japan | |
| 3 | 57.97 miles (93.30 km) S | Nagasaki Airport (NGS) | Nagasaki, Japan | |
| 4 | 66.94 miles (107.73 km) E | Kokura Airport (KKJ) | Kita Kyūshū, Kyūshū, Japan | |
| 5 | 86.57 miles (139.33 km) E | Yamaguchi Ube Airport (UBJ) | Ube, Yamaguchi Prefecture, Japan | |
| 6 | 88.23 miles (141.99 km) SE | Kumamoto Airport (KMJ) | Mashiki, Kumamoto Prefecture, Japan | |
| 7 | 92.91 miles (149.52 km) SW | Fukue Airport (FUJ) | Gotō, Nagasaki, Japan | |
| 8 | 109.98 miles (177.00 km) NNW | Gimhae International Airport (PUS) | Busan, South Korea | |
| 9 | 113.82 miles (183.17 km) E | Oita Airport (OIT) | Oita, Japan | |
| 10 | 131.22 miles (211.19 km) ENE | Iwami Airport (IWJ) | Masuda, Shimane, Japan, Japan | |
| 11 | 134.62 miles (216.65 km) NW | Sacheon Airport (HIN) | Sacheon, South Korea | |
| 12 | 144.92 miles (233.22 km) SSE | Kagoshima Airport (KOJ) | Kagoshima, Japan | |
| 13 | 156.05 miles (251.14 km) N | Pohang Airport (KPO) | Pohang, South Korea | |
| 14 | 161.40 miles (259.75 km) NNW | Daegu International Airport (TAE) | Daegu, South Korea | |
| 15 | 161.40 miles (259.75 km) SE | Miyazaki Airport (KMI) | Miyazaki, Miyazaki Prefecture, Japan | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,275.39 miles (19,755.27 km) SE | Rio Grande Regional Airport (RIG) | Rio Grande, Brazil | |
| 2 | 12,250.07 miles (19,714.53 km) SE | Pelotas International Airport (PET) | Pelotas, Rio Grande do Sul, Brazil | |
| 3 | 12,195.55 miles (19,626.79 km) E | Treinta y Tres Airport (TYT) | Treinta y Tres, Treinta y Tres, Uruguay | |
| 4 | 12,185.20 miles (19,610.12 km) ESE | Cerro Largo International Airport (MLZ) | Melo, Cerro Largo, Uruguay | |
| 5 | 12,171.33 miles (19,587.81 km) SSE | Salgado Filho International Airport (POA) | Porto Alegre, Rio Grande do Sul, Brazil | |
| 6 | 12,157.55 miles (19,565.63 km) SE | Comandante Gustavo Kraemer International Airport (BGX) | Bagé, Rio Grande do Sul, Brazil | |
| 7 | 12,148.01 miles (19,550.28 km) ESE | Capitán de Corbeta Carlos A. Curbelo International Airport (PDP) | Maldonado/Punta del Este, Maldonado, Uruguay | |
| 8 | 12,147.21 miles (19,548.98 km) ESE | Cerro Largo International Airport (VCH) | Vichadero, Rivera, Uruguay | |
| 9 | 12,096.41 miles (19,467.23 km) ESE | Carrasco/General Cesáreo L. Berisso International Airport (MVD) | Montevideo, Montevideo, Uruguay | |
| 10 | 12,090.98 miles (19,458.50 km) SE | Santa Maria Airport (RIA) | Santa Maria, Rio Grande do Sul, Brazil | |
| 11 | 12,086.48 miles (19,451.26 km) S | Diomício Freitas/Forquilhinha Airport (CCM) | Criciúma, Santa Catarina, Brazil | |
| 12 | 12,077.34 miles (19,436.55 km) ESE | Tacuarembó Airport (TAW) | Tacuarembó, Tacuarembó, Uruguay | |
| 13 | 12,074.85 miles (19,432.54 km) ESE | Pres. Gral. Óscar D. Gestido International Airport (RVY) | Rivera, Rivera, Uruguay | |
| 14 | 12,073.96 miles (19,431.11 km) E | Santa Bernardina International Airport (DZO) | Durazno, Durazno, Uruguay | |
| 15 | 12,036.46 miles (19,370.76 km) SSE | Lauro Kurtz Airport (PFB) | Passo Fundo, Rio Grande do Sul, Brazil | |