Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and St. Helens, Tasmania, Australia:
Departure Airport:
(38°34'14"N by 90°9'21"W)
Arrival Airport:
(41°20'12"S by 148°16'54"E)
Distance from CPS to HLS:
9,395.14 miles (15,119.98 km)
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Jump to:
- About this route
- CPS Airport Information
- HLS Airport Information
- Facts about CPS
- Facts about HLS
- 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 HLS
- List of Nearest Airports to HLS
- Map of Furthest Airports from HLS
- List of Furthest Airports from HLS
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and St Helens Airport (HLS), St. Helens, Tasmania, Australia would travel a Great Circle distance of 9,395 miles (or 15,120 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 St Helens 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 St Helens 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: | HLS / YSTH |
| Airport Name: | St Helens Airport |
| Location: | St. Helens, Tasmania, Australia |
| GPS Coordinates: | 41°20'12"S by 148°16'54"E |
| Operator/Owner: | Break O'Day Council |
| Airport Type: | Public |
| Elevation: | 158 feet (48 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HLS |
| More Information: | HLS 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.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.
- 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.
Facts about St Helens Airport (HLS):
- The furthest airport from St Helens Airport (HLS) is Corvo Airport (CVU), which is nearly antipodal to St Helens Airport (meaning St Helens Airport is almost on the exact opposite side of the Earth from Corvo Airport), and is located 12,317 miles (19,823 kilometers) away in Corvo Island, Azores, Portugal.
- Because of St Helens Airport's relatively low elevation of 158 feet, planes can take off or land at St Helens 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.
- St Helens Airport (HLS) currently has only 1 runway.
- The closest airport to St Helens Airport (HLS) is Launceston Airport (LST), which is located 57 miles (92 kilometers) WSW of HLS.
| 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 | 57.09 miles (91.88 km) WSW | Launceston Airport (LST) | Launceston, Tasmania, Australia | |
| 2 | 77.01 miles (123.93 km) WNW | George Town Aerodrome (GEE) | George Town, Tasmania, Australia | |
| 3 | 87.36 miles (140.59 km) N | Flinders Island Airport (FLS) | Flinders Island, Tasmania, Australia | |
| 4 | 96.86 miles (155.88 km) W | Devonport Airport (DPO) | Devonport, Tasmania, Australia | |
| 5 | 110.94 miles (178.53 km) SSW | Hobart International Airport (HBA) | Hobart, Tasmania, Australia | |
| 6 | 134.69 miles (216.77 km) W | Burnie Airport (BWT) | Burnie, Tasmania, Australia | |
| 7 | 170.12 miles (273.78 km) W | Smithton Airport (SIO) | Smithton, Tasmania, Australia | |
| 8 | 241.32 miles (388.37 km) N | Bairnsdale Aerodrome (BSJ) | Bairnsdale, Victoria, Australia | |
| 9 | 251.98 miles (405.52 km) WNW | King Island Airport (KNS) | Currie, Tasmania, Australia | |
| 10 | 287.23 miles (462.24 km) NW | Moorabbin Harry Hawker Airport (MBW) | Moorabbin, Victoria, Australia | |
| 11 | 300.22 miles (483.16 km) NW | Geelong Airport (GEX) | Grovedale, Victoria, Australia | |
| 12 | 300.66 miles (483.86 km) N | Mount Hotham Airport (MHU) | Mount Hotham, Victoria, Australia | |
| 13 | 307.52 miles (494.90 km) NW | Essendon Airport (MEB) | Melbourne, Victoria, Australia | |
| 14 | 312.45 miles (502.84 km) NW | Melbourne Airport (MEL) | Melbourne, Victoria, Australia | |
| 15 | 315.73 miles (508.12 km) NW | Avalon Airport (AVV) | Avalon, Victoria, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,317.39 miles (19,822.86 km) NNW | Corvo Airport (CVU) | Corvo Island, Azores, Portugal | |
| 2 | 12,303.39 miles (19,800.33 km) NNW | Flores Airport (FLW) | Flores Island, Azores, Portugal | |
| 3 | 12,187.96 miles (19,614.57 km) NW | Graciosa Airport (GRW) | Graciosa Island, Azores, Portugal | |
| 4 | 12,185.49 miles (19,610.60 km) NW | Horta International Airport (HOR) | Horta, Azores, Portugal | |
| 5 | 12,177.83 miles (19,598.28 km) NW | Pico Airport (PIX) | Pico Island, Azores, Portugal | |
| 6 | 12,134.30 miles (19,528.22 km) NW | Lajes Air Base (TER) | Lajes, Azores, Portugal | |
| 7 | 12,031.26 miles (19,362.39 km) NW | João Paulo II Airport (PDL) | Ponta Delgada, Azores, Portugal | |
| 8 | 11,974.54 miles (19,271.10 km) NW | Santa Maria Airport (SMA) | Santa Maria, Portugal | |
| 9 | 11,421.39 miles (18,380.90 km) WNW | Madeira Airport (FNC) | Funchal, Madeira, Portugal | |
| 10 | 11,418.70 miles (18,376.57 km) WNW | Porto Santo Airport (PXO) | Porto Santo, Madeira, Portugal | |
| 11 | 11,317.17 miles (18,213.17 km) ENE | St. John's International Airport (YYT) | St. John's, Newfoundland and Labrador, Canada | |
| 12 | 11,258.38 miles (18,118.57 km) NW | La Palma Airport (SPC) | La Palma, Canary Islands, Spain | |
| 13 | 11,249.17 miles (18,103.75 km) W | Vigo Airport (VGO) | Vigo, Galicia, Spain | |
| 14 | 11,244.10 miles (18,095.58 km) W | Francisco Sá Carneiro Airport (OPO) | Porto, Portugal | |
| 15 | 11,241.46 miles (18,091.33 km) WNW | Santiago de Compostela Airport (SCQ) | Santiago de Compostela, Spain | |