Nonstop flight route between Alton, Illinois, United States and Lyudao (Green Island), Taiwan:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(22°40'24"N by 121°27'59"E)
Distance from ALN to GNI:
7,719.93 miles (12,423.99 km)
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Jump to:
- About this route
- ALN Airport Information
- GNI Airport Information
- Facts about ALN
- Facts about GNI
- 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 GNI
- List of Nearest Airports to GNI
- Map of Furthest Airports from GNI
- List of Furthest Airports from GNI
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Lyudao Airport (Green Island Airport) (GNI), Lyudao (Green Island), Taiwan would travel a Great Circle distance of 7,720 miles (or 12,424 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 Lyudao Airport (Green Island 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 Lyudao Airport (Green Island 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: | GNI / RCGI |
| Airport Names: |
|
| Location: | Lyudao (Green Island), Taiwan |
| GPS Coordinates: | 22°40'24"N by 121°27'59"E |
| Area Served: | Lyudao (Green Island), Taiwan |
| Operator/Owner: | Civil Aeronautics Administration |
| Airport Type: | Public |
| Elevation: | 28 feet (9 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GNI |
| More Information: | GNI Maps & Info |
Facts about St. Louis Regional Airport (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 2,250 acres airfield sits at 544 ft MSL.
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- 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.
Facts about Lyudao Airport (Green Island Airport) (GNI):
- The closest airport to Lyudao Airport (Green Island Airport) (GNI) is Taitung Airport (TTT), which is located 24 miles (38 kilometers) WNW of GNI.
- The furthest airport from Lyudao Airport (Green Island Airport) (GNI) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Lyudao Airport (Green Island Airport) (meaning Lyudao Airport (Green Island Airport) is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,296 miles (19,789 kilometers) away in Mariscal Estigarribia, Paraguay.
- In addition to being known as "Lyudao Airport (Green Island Airport)", other names for GNI include "綠島航空站綠島機場" and "Lǜdǎo HángkōngzhànLǜdǎo Jīchǎng".
- Because of Lyudao Airport (Green Island Airport)'s relatively low elevation of 28 feet, planes can take off or land at Lyudao Airport (Green Island 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.
- Lyudao Airport (Green Island Airport) (GNI) currently has only 1 runway.
| 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 | 23.91 miles (38.48 km) WNW | Taitung Airport (TTT) | Taitung, Taiwan, Republic of China | |
| 2 | 44.68 miles (71.90 km) S | Lanyu Airport (KYD) | Orchid Island, Taitung County, Taiwan | |
| 3 | 64.35 miles (103.56 km) SW | Hengchun Airport (HCN) | Hengchun, Taiwan | |
| 4 | 71.51 miles (115.09 km) W | Kaohsiung International Airport (Kaohsiung Siaogang Airport) (KHH) | Kaohsiung, Taiwan | |
| 5 | 82.54 miles (132.84 km) WNW | Tainan Airport (TNN) | Tainan City, Taiwan, Republic of China | |
| 6 | 86.76 miles (139.63 km) NW | Chiayi Airport (Shueishang Airport) (CYI) | Chiayi, Taiwan | |
| 7 | 93.73 miles (150.85 km) N | Hualien Airport (HUN) | Hualien, Taiwan, Republic of China | |
| 8 | 122.30 miles (196.83 km) NNW | Taichung Airport(Taichung Ching Chuan Kang Airport) (RMQ) | Taichung, Taiwan, Taiwan | |
| 9 | 122.30 miles (196.83 km) NNW | Taichung Airport(Taichung Ching Chuan Kang Airport) (TXG) | Taichung, Taiwan, Republic of China | |
| 10 | 132.00 miles (212.43 km) WNW | Magong Airport (MZG) | Magong, Taiwan | |
| 11 | 133.90 miles (215.49 km) WNW | Wang-an Airport (WOT) | Wang-an, Penghu (Pescadores), Republic of China | |
| 12 | 135.59 miles (218.21 km) WNW | Qimei Airport (CMJ) | Cimei, Taiwan | |
| 13 | 156.67 miles (252.14 km) NE | Yonaguni Airport (OGN) | Yonaguni, Okinawa, Japan | |
| 14 | 157.05 miles (252.74 km) SSE | Basco Airport (BSO) | Basco, Batanes, Philippines | |
| 15 | 165.62 miles (266.54 km) N | Taipei International Airport (Taipei Songshan Airport) (TSA) | Taipei City, Taiwan, Republic of China | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,296.48 miles (19,789.22 km) ESE | Dr. Luis María Argaña International Airport (ESG) | Mariscal Estigarribia, Paraguay | |
| 2 | 12,264.38 miles (19,737.56 km) W | Dr. Augusto Roberto Fuster International Airport (PJC) | Pedro Juan Caballero, Paraguay | |
| 3 | 12,256.02 miles (19,724.11 km) W | Ponta Porã International Airport (PMG) | Ponta Porã, Mato Grosso do Sul, Brazil | |
| 4 | 12,248.28 miles (19,711.65 km) SSW | Silvio Pettirossi International Airport (ASU) | Asunción, Paraguay | |
| 5 | 12,248.14 miles (19,711.43 km) SSW | Clorinda Airport (CLX) | Clorinda, Formosa, Argentina | |
| 6 | 12,204.08 miles (19,640.51 km) W | Francisco de Matos Pereira Airport (DOU) | Dourados, Minas Gerais, Brazil | |
| 7 | 12,191.51 miles (19,620.29 km) S | Formosa International Airport (FMA) | Formosa, Argentina | |
| 8 | 12,177.75 miles (19,598.14 km) SSW | Corumbá International Airport (CMG) | Corumbá, Mato Grosso do Sul, Brazil | |
| 9 | 12,177.15 miles (19,597.18 km) S | Puerto Suárez International Airport (PSZ) | Puerto Suárez, Bolivia | |
| 10 | 12,145.75 miles (19,546.65 km) S | Carlos Miguel Jiménez Airport (PIL) | Pilar, Paraguay | |
| 11 | 12,145.60 miles (19,546.39 km) WSW | Campo Grande International Airport (CGR) | Campo Grande, Mato Grosso do Sul, Brazil | |
| 12 | 12,144.59 miles (19,544.78 km) WSW | Guaíra Municipal Airport (QGA) | Guaíra, Paraná, Brazil | |
| 13 | 12,134.94 miles (19,529.24 km) SW | Guaraní International Airport (AGT) | Ciudad del Este, Paraguay | |
| 14 | 12,111.18 miles (19,491.00 km) SW | Foz do Iguaçu/Cataratas International Airport (IGU) | Foz do Iguaçu, Paraná, Brazil | |
| 15 | 12,106.54 miles (19,483.54 km) S | Doctor Fernando Piragine Niveyro International Airport (CNQ) | Corrientes, Corrientes, Argentina | |