Nonstop flight route between Carbondale/Murphysboro, Illinois, United States and St. Thomas, Ontario, Canada:
Departure Airport:
(37°46'41"N by 89°15'6"W)
Arrival Airport:
(42°46'12"N by 81°6'34"W)
Distance from MDH to YQS:
550.18 miles (885.42 km)
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Jump to:
- About this route
- MDH Airport Information
- YQS Airport Information
- Facts about MDH
- Facts about YQS
- Map of Nearest Airports to MDH
- List of Nearest Airports to MDH
- Map of Furthest Airports from MDH
- List of Furthest Airports from MDH
- Map of Nearest Airports to YQS
- List of Nearest Airports to YQS
- Map of Furthest Airports from YQS
- List of Furthest Airports from YQS
About this route:
A direct, nonstop flight between Southern Illinois Airport (MDH), Carbondale/Murphysboro, Illinois, United States and St. Thomas Municipal Airport (YQS), St. Thomas, Ontario, Canada would travel a Great Circle distance of 550 miles (or 885 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 Southern Illinois Airport and St. Thomas Municipal Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | MDH / KMDH |
| Airport Name: | Southern Illinois Airport |
| Location: | Carbondale/Murphysboro, Illinois, United States |
| GPS Coordinates: | 37°46'41"N by 89°15'6"W |
| Area Served: | Carbondale / Murphysboro, Illinois |
| Airport Type: | Public |
| Elevation: | 411 feet (125 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from MDH |
| More Information: | MDH Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | YQS / CYQS |
| Airport Name: | St. Thomas Municipal Airport |
| Location: | St. Thomas, Ontario, Canada |
| GPS Coordinates: | 42°46'12"N by 81°6'34"W |
| Operator/Owner: | Municipality of St. Thomas |
| Airport Type: | Public |
| Elevation: | 779 feet (237 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from YQS |
| More Information: | YQS Maps & Info |
Facts about Southern Illinois Airport (MDH):
- Because of Southern Illinois Airport's relatively low elevation of 411 feet, planes can take off or land at Southern Illinois 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.
- Based upon a study commissioned by the Illinois Aeronautics Division, the airport contributes more than $13.8 million in direct and indirect benefits to the region on an annual basis.
- Southern Illinois Airport (MDH) has 3 runways.
- The closest airport to Southern Illinois Airport (MDH) is Williamson County Regional Airport (MWA), which is located only 13 miles (21 kilometers) E of MDH.
- The furthest airport from Southern Illinois Airport (MDH) is Margaret River Airport (MGV), which is located 11,052 miles (17,786 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Thomas Municipal Airport (YQS):
- The closest airport to St. Thomas Municipal Airport (YQS) is London international Airport (YXU), which is located only 18 miles (29 kilometers) N of YQS.
- Because of St. Thomas Municipal Airport's relatively low elevation of 779 feet, planes can take off or land at St. Thomas Municipal 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 St. Thomas Municipal Airport (YQS) is Margaret River Airport (MGV), which is located 11,370 miles (18,298 kilometers) away in Margaret River, Western Australia, Australia.
- St. Thomas Municipal Airport (YQS) has 3 runways.
- The airport is in uncontrolled airspace but has a UNICOM operating during working hours on 122.70 MHz.
- There is one flight training school operating out of the airport, in addition to numerous agricultural aircraft in the summer.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 13.25 miles (21.32 km) E | Williamson County Regional Airport (MWA) | Marion, Illinois, United States |     |
| 2 | 42.00 miles (67.60 km) SSW | Cape Girardeau Regional Airport (CGI) | Cape Girardeau, Missouri, United States | |
| 3 | 43.33 miles (69.73 km) NNE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 4 | 56.13 miles (90.33 km) SSE | Barkley Regional Airport (PAH) | Paducah, Kentucky, United States | |
| 5 | 61.76 miles (99.38 km) NNE | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 6 | 61.76 miles (99.39 km) NNW | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 7 | 63.08 miles (101.52 km) SSW | Sikeston Memorial Municipal AirportHarvey Parks Army Airfield (SIK) | Sikeston, Missouri, United States | |
| 8 | 73.43 miles (118.17 km) N | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 9 | 73.57 miles (118.39 km) NW | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 10 | 88.08 miles (141.75 km) NNW | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 11 | 90.04 miles (144.90 km) NW | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 12 | 90.88 miles (146.26 km) SSE | Murray-Calloway County Airport (CEY) | Murray, Kentucky, United States | |
| 13 | 91.13 miles (146.67 km) SSW | Malden Regional Airport (MAW) | Malden, Missouri, United States | |
| 14 | 95.53 miles (153.74 km) ENE | Evansville Regional Airport (EVV) | Evansville, Indiana, United States | |
| 15 | 97.50 miles (156.92 km) NW | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,051.53 miles (17,785.68 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,029.89 miles (17,750.84 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,007.86 miles (17,715.39 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 11,001.79 miles (17,705.62 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,981.21 miles (17,672.50 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,965.17 miles (17,646.68 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,957.71 miles (17,634.68 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 8 | 10,956.35 miles (17,632.49 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 10,925.97 miles (17,583.60 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 10 | 10,923.77 miles (17,580.06 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 11 | 10,908.91 miles (17,556.14 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 12 | 10,907.23 miles (17,553.44 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 13 | 10,872.34 miles (17,497.29 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,871.76 miles (17,496.37 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 15 | 10,870.81 miles (17,494.82 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 18.30 miles (29.44 km) N | London international Airport (YXU) | London, Ontario, Canada | |
| 2 | 40.89 miles (65.80 km) NNW | Centralia/James T. Field Memorial Aerodrome (YCE) | Centralia, Ontario, Canada | |
| 3 | 58.96 miles (94.88 km) WSW | Chatham-Kent Airport (XCM) | Chatham-Kent, Ontario, Canada | |
| 4 | 60.32 miles (97.07 km) NE | Region of Waterloo International Airport (YKF) | Waterloo Regional Municipality, Ontario, Canada | |
| 5 | 62.78 miles (101.03 km) WNW | Sarnia (Chris Hadfield) Airport (YZR) | Sarnia, Ontario, Canada | |
| 6 | 65.61 miles (105.59 km) ENE | John C. Munro Hamilton International Airport (YHM) | Hamilton, Ontario, Canada | |
| 7 | 67.28 miles (108.28 km) SE | Erie International Airport (ERI) | Erie, Pennsylvania, United States | |
| 8 | 71.73 miles (115.44 km) SSE | Northeast Ohio Regional Airport (JFN) | Ashtabula, Ohio, United States | |
| 9 | 72.55 miles (116.76 km) W | St. Clair County International Airport (PHN) | Port Huron, Michigan, United States | |
| 10 | 76.40 miles (122.95 km) S | Willoughby Lost Nation Municipal Airport (LNN) | Willoughby, Ohio, United States | |
| 11 | 85.46 miles (137.54 km) SSW | Cuyahoga County Airport (CGF) | Cleveland, Ohio, United States | |
| 12 | 88.36 miles (142.20 km) W | Selfridge Air National Guard Base (MTC) | Mount Clemens, Michigan, United States | |
| 13 | 91.32 miles (146.96 km) SSE | Port Meadville Airport (MEJ) | Meadville, Pennsylvania, United States | |
| 14 | 91.39 miles (147.08 km) SSW | Cleveland Burke Lakefront Airport (BKL) | Cleveland, Ohio, United States | |
| 15 | 95.35 miles (153.46 km) E | Chautauqua County/Dunkirk Airport (DKK) | Dunkirk, New York, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,369.97 miles (18,298.15 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,345.99 miles (18,259.55 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,337.84 miles (18,246.44 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,320.03 miles (18,217.78 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,287.85 miles (18,165.99 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,262.27 miles (18,124.83 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,252.14 miles (18,108.52 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,245.11 miles (18,097.21 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 9 | 11,241.02 miles (18,090.62 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,197.08 miles (18,019.91 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,130.47 miles (17,912.72 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,101.59 miles (17,866.23 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,085.72 miles (17,840.69 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,082.48 miles (17,835.48 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,048.96 miles (17,781.54 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |