Nonstop flight route between St. Mary's, Alaska, United States and Salem, Illinois, United States:
Departure Airport:
(62°3'38"N by 163°18'6"W)
Arrival Airport:
(38°38'34"N by 88°57'51"W)
Distance from KSM to SLO:
3,414.78 miles (5,495.54 km)
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Jump to:
- About this route
- KSM Airport Information
- SLO Airport Information
- Facts about KSM
- Facts about SLO
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to SLO
- List of Nearest Airports to SLO
- Map of Furthest Airports from SLO
- List of Furthest Airports from SLO
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Salem–Leckrone Airport (SLO), Salem, Illinois, United States would travel a Great Circle distance of 3,415 miles (or 5,496 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. Mary's Airport and Salem–Leckrone Airport, 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. Mary's Airport and Salem–Leckrone Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | KSM / PASM |
| Airport Name: | St. Mary's Airport |
| Location: | St. Mary's, Alaska, United States |
| GPS Coordinates: | 62°3'38"N by 163°18'6"W |
| Operator/Owner: | Alaska DOT&PF |
| Airport Type: | Public |
| Elevation: | 312 feet (95 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from KSM |
| More Information: | KSM Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SLO / KSLO |
| Airport Name: | Salem–Leckrone Airport |
| Location: | Salem, Illinois, United States |
| GPS Coordinates: | 38°38'34"N by 88°57'51"W |
| Area Served: | Salem, Illinois |
| Operator/Owner: | Salem Airport Authority |
| Airport Type: | Public |
| Elevation: | 573 feet (175 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SLO |
| More Information: | SLO Maps & Info |
Facts about St. Mary's Airport (KSM):
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
- St. Mary's Airport (KSM) has 2 runways.
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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 closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
Facts about Salem–Leckrone Airport (SLO):
- Because of Salem–Leckrone Airport's relatively low elevation of 573 feet, planes can take off or land at Salem–Leckrone 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 Salem–Leckrone Airport (SLO) is Margaret River Airport (MGV), which is located 11,062 miles (17,802 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Salem–Leckrone Airport (SLO) is Mt. Vernon Airport (MVN), which is located 23 miles (37 kilometers) SSE of SLO.
- Salem–Leckrone Airport (SLO) currently has only 1 runway.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.52 miles (20.15 km) W | Mountain Village Airport (MOU) | Mountain Village, Alaska, United States |     |
| 2 | 15.71 miles (25.28 km) ESE | Pilot Station Airport (PQS) | Pilot Station, Alaska, United States | |
| 3 | 43.61 miles (70.18 km) ESE | Marshall Don Hunter Sr. Airport (MLL) | Marshall, Alaska, United States | |
| 4 | 58.95 miles (94.87 km) WNW | Sheldon Point Airport (SXP) | Sheldon Point, Alaska, United States | |
| 5 | 61.02 miles (98.20 km) NW | Alakanuk Airport (AUK) | Alakanuk, Alaska, United States | |
| 6 | 62.90 miles (101.24 km) NW | Emmonak Airport (EMK) | Emmonak, Alaska, United States | |
| 7 | 67.40 miles (108.48 km) N | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 8 | 67.43 miles (108.52 km) ESE | Russian Mission Airport (RSH) | Russian Mission, Alaska, United States | |
| 9 | 75.21 miles (121.04 km) W | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 10 | 83.21 miles (133.91 km) WSW | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 11 | 84.72 miles (136.35 km) SSE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 12 | 85.97 miles (138.35 km) SSE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 13 | 88.49 miles (142.42 km) W | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 14 | 89.19 miles (143.53 km) SSW | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 15 | 89.22 miles (143.59 km) SSE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,494.08 miles (16,888.54 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,482.44 miles (16,869.80 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,457.83 miles (16,830.21 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,416.76 miles (16,764.12 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,371.90 miles (16,691.92 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,261.64 miles (16,514.46 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,199.66 miles (16,414.71 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,195.75 miles (16,408.43 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,169.94 miles (16,366.89 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 10 | 10,169.94 miles (16,366.89 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 11 | 10,157.43 miles (16,346.75 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,151.99 miles (16,338.00 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,149.37 miles (16,333.79 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 14 | 10,143.31 miles (16,324.03 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 15 | 10,133.50 miles (16,308.25 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 22.80 miles (36.69 km) SSE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 2 | 26.05 miles (41.92 km) WNW | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 3 | 47.52 miles (76.48 km) W | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 4 | 60.74 miles (97.76 km) WNW | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 5 | 61.39 miles (98.80 km) S | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 6 | 61.76 miles (99.38 km) SSW | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 7 | 64.55 miles (103.88 km) W | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 8 | 68.42 miles (110.11 km) NNE | Coles County Memorial Airport (MTO) | Mattoon/Charleston, Illinois, United States | |
| 9 | 73.73 miles (118.66 km) E | Lawrenceville–Vincennes International Airport (LWV) | Lawrenceville, Illinois, United States | |
| 10 | 75.69 miles (121.81 km) W | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 11 | 76.24 miles (122.70 km) E | O'Neal Airport (OEA) | Vincennes, Indiana, United States | |
| 12 | 80.22 miles (129.10 km) E | Ed-Air Airport (OTN) | Oaktown, Indiana, United States | |
| 13 | 82.50 miles (132.78 km) N | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| 14 | 87.81 miles (141.32 km) ENE | Sullivan County Airport (SIV) | Sullivan, Indiana, United States | |
| 15 | 88.19 miles (141.93 km) ESE | Evansville Regional Airport (EVV) | Evansville, Indiana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,061.93 miles (17,802.41 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,039.84 miles (17,766.86 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,017.17 miles (17,730.38 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 11,014.01 miles (17,725.28 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,986.57 miles (17,681.13 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,971.12 miles (17,656.27 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,961.97 miles (17,641.53 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,957.97 miles (17,635.11 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,939.06 miles (17,604.66 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,921.98 miles (17,577.18 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,919.07 miles (17,572.50 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,901.66 miles (17,544.47 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,869.48 miles (17,492.69 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,868.64 miles (17,491.33 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,859.47 miles (17,476.58 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |