Nonstop flight route between Carbondale/Murphysboro, Illinois, United States and Gaithersburg, Maryland, United States:
Departure Airport:
(37°46'41"N by 89°15'6"W)
Arrival Airport:
(39°10'5"N by 77°9'57"W)
Distance from MDH to GAI:
660.27 miles (1,062.61 km)
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Jump to:
- About this route
- MDH Airport Information
- GAI Airport Information
- Facts about MDH
- Facts about GAI
- 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 GAI
- List of Nearest Airports to GAI
- Map of Furthest Airports from GAI
- List of Furthest Airports from GAI
About this route:
A direct, nonstop flight between Southern Illinois Airport (MDH), Carbondale/Murphysboro, Illinois, United States and Montgomery County Airpark (GAI), Gaithersburg, Maryland, United States would travel a Great Circle distance of 660 miles (or 1,063 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 Montgomery County Airpark, 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: | GAI / KGAI |
| Airport Name: | Montgomery County Airpark |
| Location: | Gaithersburg, Maryland, United States |
| GPS Coordinates: | 39°10'5"N by 77°9'57"W |
| Operator/Owner: | Montgomery County Revenue Authority |
| Airport Type: | Public |
| Elevation: | 539 feet (164 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GAI |
| More Information: | GAI 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.
- Southern Illinois Airport (MDH) has 3 runways.
- 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.
- 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.
- 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 is also the home operating base for Southern Illinois University's aviation flight and aviation technologies programs.
- Southern Illinois Airport covers an area of 850 acres at an elevation of 411 feet above mean sea level.
Facts about Montgomery County Airpark (GAI):
- Because of Montgomery County Airpark's relatively low elevation of 539 feet, planes can take off or land at Montgomery County Airpark 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 Montgomery County Airpark (GAI) is Margaret River Airport (MGV), which is located 11,667 miles (18,776 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Montgomery County Airpark (GAI) is College Park Airport (CGS), which is located only 18 miles (30 kilometers) SE of GAI.
- Montgomery County Airpark (GAI) currently has only 1 runway.
| 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 | 18.42 miles (29.64 km) SE | College Park Airport (CGS) | College Park, Maryland, United States | |
| 2 | 20.51 miles (33.01 km) NNW | Frederick Municipal Airport (FDK) | Frederick, Maryland, United States | |
| 3 | 21.89 miles (35.23 km) WSW | Leesburg Executive Airport (JYO) | Leesburg, Virginia, United States | |
| 4 | 21.93 miles (35.30 km) SW | Washington Dulles International Airport (IAD) | Washington, D.C. / Virginia, United States | |
| 5 | 22.53 miles (36.27 km) ESE | Tipton Airport (FME) | Odenton, Maryland, United States | |
| 6 | 22.90 miles (36.85 km) SSE | Ronald Reagan Washington National Airport (DCA) | Arlington County, Virginia (near Washington, D.C.), United States | |
| 7 | 23.89 miles (38.45 km) SSE | Bolling Air Force Base (BOF) | Washington, D.C., United States | |
| 8 | 26.66 miles (42.91 km) E | Baltimore/Washington International Thurgood Marshall Airport (BWI) | between Baltimore, Maryland and Washington, D.C., United States | |
| 9 | 29.46 miles (47.42 km) SSE | Andrews Field (ADW) | Camp Springs, Maryland, United States | |
| 10 | 31.33 miles (50.42 km) S | Davison Army Airfield (DAA) | Fort Belvoir, Virginia, United States | |
| 11 | 35.65 miles (57.38 km) ESE | Lee Airport (ANP) | Annapolis, Maryland, United States | |
| 12 | 36.14 miles (58.17 km) SSW | Manassas Regional Airport (HEF) | Manassas, Virginia, United States | |
| 13 | 36.14 miles (58.17 km) SSW | Manassas Regional Airport (MNZ) | Manassas, Virginia, United States | |
| 14 | 41.68 miles (67.08 km) ENE | Martin State Airport (MTN) | Baltimore, Maryland, United States | |
| 15 | 46.66 miles (75.10 km) WNW | Eastern WV Regional Airport (MRB) | Martinsburg, West Virginia, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,666.70 miles (18,775.69 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,643.21 miles (18,737.88 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,626.78 miles (18,711.44 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,618.29 miles (18,697.78 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,569.54 miles (18,619.33 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 11,562.29 miles (18,607.65 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 7 | 11,557.61 miles (18,600.12 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,547.00 miles (18,583.04 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,531.89 miles (18,558.73 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,512.82 miles (18,528.04 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,450.47 miles (18,427.70 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,417.88 miles (18,375.26 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,407.68 miles (18,358.84 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,401.53 miles (18,348.94 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,328.35 miles (18,231.17 km) SW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |