Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Kilronan, Inishmore, Ireland:
Departure Airport:
(38°34'14"N by 90°9'21"W)
Arrival Airport:
(53°6'24"N by 9°39'14"W)
Distance from CPS to IOR:
3,788.01 miles (6,096.20 km)
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Jump to:
- About this route
- CPS Airport Information
- IOR Airport Information
- Facts about CPS
- Facts about IOR
- 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 IOR
- List of Nearest Airports to IOR
- Map of Furthest Airports from IOR
- List of Furthest Airports from IOR
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Inishmore Aerodrome (IOR), Kilronan, Inishmore, Ireland would travel a Great Circle distance of 3,788 miles (or 6,096 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 Inishmore Aerodrome, 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 Inishmore Aerodrome. 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: | IOR / EIIM |
| Airport Names: |
|
| Location: | Kilronan, Inishmore, Ireland |
| GPS Coordinates: | 53°6'24"N by 9°39'14"W |
| Area Served: | Inishmore, Aran Islands, County Galway, Ireland |
| Operator/Owner: | Údarás na Gaeltachta Na Forbacha |
| Airport Type: | Private |
| Elevation: | 24 feet (7 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from IOR |
| More Information: | IOR Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
- 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.
- 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 airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
Facts about Inishmore Aerodrome (IOR):
- Inishmore Aerodrome (IOR) currently has only 1 runway.
- Because of Inishmore Aerodrome's relatively low elevation of 24 feet, planes can take off or land at Inishmore Aerodrome 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 Inishmore Aerodrome (IOR) is Ryan's Creek Aerodrome (SZS), which is located 11,997 miles (19,307 kilometers) away in Stewart Island, New Zealand.
- In addition to being known as "Inishmore Aerodrome", another name for IOR is "Kilronan Airport".
- The closest airport to Inishmore Aerodrome (IOR) is Inishmaan Aerodrome (IIA), which is located only 4 miles (6 kilometers) ESE of IOR.
| 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 | 3.63 miles (5.84 km) ESE | Inishmaan Aerodrome (IIA) | Inishmaan, Ireland | |
| 2 | 6.61 miles (10.64 km) ESE | Inisheer Aerodrome (INQ) | Inisheer, Ireland | |
| 3 | 11.51 miles (18.52 km) NE | Connemara Airport (NNR) | Inverin, Ireland | |
| 4 | 32.38 miles (52.11 km) ENE | Galway Airport (GWY) | Galway, Ireland | |
| 5 | 41.31 miles (66.48 km) SE | Shannon Airport (SNN) | Shannon (County Clare), Ireland | |
| 6 | 64.22 miles (103.35 km) S | Kerry Airport (KIR) | Tralee, County Kerry, Ireland | |
| 7 | 65.26 miles (105.02 km) NNE | Ireland West Airport Knock (NOC) | Knock, Ireland | |
| 8 | 78.63 miles (126.54 km) N | Belmullet Aerodrome (BLY) | Belmullet, Ireland | |
| 9 | 91.84 miles (147.79 km) NNE | Sligo Airport (SXL) | Strandhill (near Sligo), Ireland | |
| 10 | 99.62 miles (160.32 km) S | Bantry Aerodrome (BYT) | Bantry, County Cork, Ireland | |
| 11 | 100.20 miles (161.26 km) SSE | Cork Airport (ORK) | Cork, Ireland | |
| 12 | 103.24 miles (166.14 km) ESE | Kilkenny Airport (KKY) | Kilkenny, Ireland | |
| 13 | 121.04 miles (194.80 km) NE | Enniskillen/St Angelo Airport (ENK) | Enniskillen, Co Fermanagh, Northern Ireland, United Kingdom | |
| 14 | 124.96 miles (201.10 km) ESE | Waterford Airport (WAT) | Waterford, Ireland | |
| 15 | 141.51 miles (227.73 km) E | Dublin Airport (DUB) | Dublin, Ireland | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,996.55 miles (19,306.53 km) SSE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 2 | 11,965.47 miles (19,256.51 km) SSE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 3 | 11,940.74 miles (19,216.71 km) S | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 4 | 11,889.53 miles (19,134.30 km) S | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 5 | 11,873.61 miles (19,108.68 km) S | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 6 | 11,873.44 miles (19,108.41 km) S | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 7 | 11,855.36 miles (19,079.30 km) S | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 8 | 11,843.88 miles (19,060.83 km) SSE | Milford Sound Airport (MFN) | Milford Sound, New Zealand | |
| 9 | 11,827.18 miles (19,033.96 km) S | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 10 | 11,801.04 miles (18,991.89 km) S | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 11 | 11,797.47 miles (18,986.14 km) S | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 12 | 11,791.39 miles (18,976.35 km) S | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 13 | 11,770.24 miles (18,942.31 km) S | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| 14 | 11,764.82 miles (18,933.60 km) S | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 15 | 11,718.09 miles (18,858.39 km) S | Hokitika Airport (HKK) | Hokitika, New Zealand | |