Nonstop flight route between Alton, Illinois, United States and Sarnia, Ontario, Canada:
Departure Airport:
(38°53'25"N by 90°2'45"W)
Arrival Airport:
(42°59'58"N by 82°18'33"W)
Distance from ALN to YZR:
493.27 miles (793.84 km)
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Jump to:
- About this route
- ALN Airport Information
- YZR Airport Information
- Facts about ALN
- Facts about YZR
- 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 YZR
- List of Nearest Airports to YZR
- Map of Furthest Airports from YZR
- List of Furthest Airports from YZR
About this route:
A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and Sarnia (Chris Hadfield) Airport (YZR), Sarnia, Ontario, Canada would travel a Great Circle distance of 493 miles (or 794 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 St. Louis Regional Airport and Sarnia (Chris Hadfield) Airport, the route shown on this map most likely still appears to be a straight line.
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: | YZR / CYZR |
| Airport Name: | Sarnia (Chris Hadfield) Airport |
| Location: | Sarnia, Ontario, Canada |
| GPS Coordinates: | 42°59'58"N by 82°18'33"W |
| Area Served: | Sarnia, Ontario |
| Operator/Owner: | City of Sarnia |
| Airport Type: | Public |
| Elevation: | 595 feet (181 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from YZR |
| More Information: | YZR 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.
- Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.
- St. Louis Regional Airport (ALN) has 2 runways.
- 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.
- 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.
Facts about Sarnia (Chris Hadfield) Airport (YZR):
- The closest airport to Sarnia (Chris Hadfield) Airport (YZR) is St. Clair County International Airport (PHN), which is located only 13 miles (20 kilometers) WSW of YZR.
- Because of Sarnia (Chris Hadfield) Airport's relatively low elevation of 595 feet, planes can take off or land at Sarnia (Chris Hadfield) 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 furthest airport from Sarnia (Chris Hadfield) Airport (YZR) is Margaret River Airport (MGV), which is located 11,309 miles (18,200 kilometers) away in Margaret River, Western Australia, Australia.
- Sarnia (Chris Hadfield) Airport (YZR) has 2 runways.
| 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 | 12.68 miles (20.41 km) WSW | St. Clair County International Airport (PHN) | Port Huron, Michigan, United States | |
| 2 | 37.98 miles (61.13 km) SW | Selfridge Air National Guard Base (MTC) | Mount Clemens, Michigan, United States | |
| 3 | 45.05 miles (72.51 km) ENE | Centralia/James T. Field Memorial Aerodrome (YCE) | Centralia, Ontario, Canada | |
| 4 | 49.30 miles (79.34 km) SSE | Chatham-Kent Airport (XCM) | Chatham-Kent, Ontario, Canada | |
| 5 | 54.13 miles (87.11 km) SW | Coleman A. Young International Airport (DET) | Detroit, Michigan, United States | |
| 6 | 58.56 miles (94.25 km) E | London international Airport (YXU) | London, Ontario, Canada | |
| 7 | 59.81 miles (96.25 km) SSW | Windsor International Airport (YQG) | Windsor, Ontario, Canada | |
| 8 | 60.84 miles (97.91 km) WSW | Oakland County International Airport (PTK) | Waterford, Michigan, United States | |
| 9 | 62.78 miles (101.03 km) ESE | St. Thomas Municipal Airport (YQS) | St. Thomas, Ontario, Canada | |
| 10 | 72.53 miles (116.72 km) W | Bishop International Airport (FNT) | Flint, Michigan, United States | |
| 11 | 76.00 miles (122.31 km) SW | Detroit Metropolitan Wayne County Airport (DTW) | Romulus (near Detroit), Michigan, United States | |
| 12 | 81.39 miles (130.98 km) SW | Willow Run Airport (YIP) (YIP) | Detroit, Michigan, United States | |
| 13 | 90.19 miles (145.14 km) NNE | Kincardine Airport (YKD) | Kincardine, Ontario, Canada | |
| 14 | 90.62 miles (145.84 km) SW | Ann Arbor Municipal Airport (ARB) | Ann Arbor, Michigan, United States | |
| 15 | 96.38 miles (155.11 km) WNW | MBS International Airport (MBS) | Midland/Bay City/Saginaw, Michigan, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,309.08 miles (18,200.16 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,285.13 miles (18,161.61 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,276.26 miles (18,147.34 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,259.26 miles (18,119.98 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,225.49 miles (18,065.62 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,202.67 miles (18,028.90 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,192.24 miles (18,012.12 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,183.33 miles (17,997.78 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 9 | 11,181.19 miles (17,994.33 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,139.35 miles (17,927.00 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,074.47 miles (17,822.59 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,043.99 miles (17,773.54 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,031.24 miles (17,753.02 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,025.98 miles (17,744.54 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,986.35 miles (17,680.77 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |