Nonstop flight route between Cheyenne, Wyoming, United States and Alton, Illinois, United States:
Departure Airport:
(41°9'20"N by 104°48'38"W)
Arrival Airport:
(38°53'25"N by 90°2'45"W)
Distance from CYS to ALN:
795.69 miles (1,280.53 km)
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Jump to:
- About this route
- CYS Airport Information
- ALN Airport Information
- Facts about CYS
- Facts about ALN
- Map of Nearest Airports to CYS
- List of Nearest Airports to CYS
- Map of Furthest Airports from CYS
- List of Furthest Airports from CYS
- Map of Nearest Airports to ALN
- List of Nearest Airports to ALN
- Map of Furthest Airports from ALN
- List of Furthest Airports from ALN
About this route:
A direct, nonstop flight between Cheyenne Regional Airport (CYS), Cheyenne, Wyoming, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 796 miles (or 1,281 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 relatively short distance between Cheyenne Regional Airport and St. Louis Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | CYS / KCYS |
| Airport Names: |
|
| Location: | Cheyenne, Wyoming, United States |
| GPS Coordinates: | 41°9'20"N by 104°48'38"W |
| Area Served: | Cheyenne, Wyoming |
| Operator/Owner: | Cheyenne Regional Airport Board |
| Airport Type: | Public |
| Elevation: | 6159 feet (1,877 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from CYS |
| More Information: | CYS Maps & Info |
Arrival 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 |
Facts about Cheyenne Regional Airport (CYS):
- The Boeing/United Airlines Terminal Building, Hangar and Fountain, built for what would become United Airlines between 1929 and 1934, are listed on the National Register of Historic Places.
- Because of Cheyenne Regional Airport's high elevation of 6,159 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CYS. Combined with a high temperature, this could make CYS a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Cheyenne Regional Airport (CYS) is Sir Gaëtan Duval Airport (RRG), which is located 10,803 miles (17,385 kilometers) away in Rodrigues Island, Mauritius.
- In addition to being known as "Cheyenne Regional Airport", another name for CYS is "Jerry Olson Field".
- United Airlines stopped at Cheyenne until 1960.
- The closest airport to Cheyenne Regional Airport (CYS) is Francis E. Warren Air Force Base (FEW), which is located only 3 miles (5 kilometers) WSW of CYS.
- Cheyenne Regional Airport (CYS) has 2 runways.
Facts about St. Louis Regional Airport (ALN):
- West Star Aviation is the largest fixed base operations company at the airport.
- 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.
- 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 2,250 acres airfield sits at 544 ft MSL.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 3.32 miles (5.34 km) WSW | Francis E. Warren Air Force Base (FEW) | Cheyenne, Wyoming, United States |     |
| 2 | 46.20 miles (74.35 km) WNW | Laramie Regional Airport (LAR) | Laramie, Wyoming, United States | |
| 3 | 49.74 miles (80.04 km) SSW | Fort Collins-Loveland Municipal Airport (FNL) | Fort Collins/Loveland, Colorado, United States | |
| 4 | 50.47 miles (81.23 km) S | Greeley-Weld County Airport (GXY) | Greeley, Colorado, United States | |
| 5 | 71.40 miles (114.91 km) NNE | Torrington Municipal Airport (TOR) | Torrington, Wyoming, United States | |
| 6 | 80.09 miles (128.89 km) NE | Western Nebraska Regional Airport (BFF) | Scottsbluff, Nebraska, United States | |
| 7 | 80.13 miles (128.96 km) SSW | Boulder Municipal Airport (WBU) | Boulder, Colorado, United States | |
| 8 | 87.63 miles (141.02 km) S | Rocky Mountain Metropolitan Airport (BJC) | Denver, Colorado, United States | |
| 9 | 89.69 miles (144.34 km) S | Denver International Airport (DEN) | Denver, Colorado, United States | |
| 10 | 95.09 miles (153.03 km) E | Sidney Municipal Airport (SNY) | Sidney, Nebraska, United States | |
| 11 | 106.38 miles (171.20 km) WNW | Shively Field (SAA) | Saratoga, Wyoming, United States | |
| 12 | 107.31 miles (172.70 km) SE | Colorado Plains Regional Airport (AKO) | Akron, Colorado, United States | |
| 13 | 109.57 miles (176.34 km) S | Centennial Airport (APA) | Arapahoe County, Colorado, United States | |
| 14 | 116.19 miles (186.99 km) WSW | Steamboat Springs Airport (SBS) | Steamboat Springs, Colorado, United States | |
| 15 | 117.21 miles (188.63 km) NNW | Converse County Airport (DGW) | Douglas, Wyoming, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,802.82 miles (17,385.41 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,675.12 miles (17,179.89 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,645.53 miles (17,132.27 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,624.57 miles (17,098.55 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,473.59 miles (16,855.57 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,353.15 miles (16,661.73 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,351.13 miles (16,658.49 km) ESE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,308.33 miles (16,589.61 km) ESE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,231.98 miles (16,466.73 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 10,214.49 miles (16,438.58 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 11 | 10,193.41 miles (16,404.67 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 12 | 10,191.77 miles (16,402.03 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 13 | 10,188.91 miles (16,397.43 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,180.48 miles (16,383.86 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 15 | 10,170.02 miles (16,367.03 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 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 | |