Nonstop flight route between Chesterfield, Missouri, United States and St. Mary's, Alaska, United States:
Departure Airport:
(38°39'43"N by 90°39'6"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from SUS to KSM:
3,359.51 miles (5,406.60 km)
Share this route:
Jump to:
- About this route
- SUS Airport Information
- KSM Airport Information
- Facts about SUS
- Facts about KSM
- Map of Nearest Airports to SUS
- List of Nearest Airports to SUS
- Map of Furthest Airports from SUS
- List of Furthest Airports from SUS
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
About this route:
A direct, nonstop flight between Spirit of St. Louis Airport (SUS), Chesterfield, Missouri, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,360 miles (or 5,407 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 Spirit of St. Louis Airport and St. Mary's 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 Spirit of St. Louis Airport and St. Mary's Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SUS / KSUS |
| Airport Name: | Spirit of St. Louis Airport |
| Location: | Chesterfield, Missouri, United States |
| GPS Coordinates: | 38°39'43"N by 90°39'6"W |
| Operator/Owner: | St. Louis County |
| Airport Type: | Public |
| Elevation: | 463 feet (141 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SUS |
| More Information: | SUS Maps & Info |
Arrival 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 |
Facts about Spirit of St. Louis Airport (SUS):
- Because of Spirit of St. Louis Airport's relatively low elevation of 463 feet, planes can take off or land at Spirit of St. Louis 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 Spirit of St. Louis Airport (SUS) is Margaret River Airport (MGV), which is located 10,971 miles (17,656 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Spirit of St. Louis Airport (SUS) is Lambert–St. Louis International Airport (STL), which is located only 17 miles (27 kilometers) ENE of SUS.
- The airport also hosted the St.
- Spirit of St. Louis Airport (SUS) has 2 runways.
- In 2007, the airport finished a multi-million dollar expansion project to add a parallel taxiway to the north of 26R/8L.
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
- 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.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.73 miles (26.93 km) ENE | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States |     |
| 2 | 27.50 miles (44.26 km) ESE | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 3 | 36.24 miles (58.32 km) ENE | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 4 | 44.83 miles (72.15 km) E | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 5 | 69.63 miles (112.05 km) E | Greenville Airport (GRE) | Greenville, Illinois, United States | |
| 6 | 70.90 miles (114.10 km) WSW | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 7 | 81.34 miles (130.90 km) W | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States | |
| 8 | 85.17 miles (137.07 km) W | Columbia Regional Airport (COU) | Columbia, Missouri, United States | |
| 9 | 91.08 miles (146.58 km) E | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 10 | 93.12 miles (149.85 km) NNW | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 11 | 96.87 miles (155.90 km) NNE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 12 | 97.50 miles (156.92 km) SE | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 13 | 99.77 miles (160.56 km) ESE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 14 | 102.86 miles (165.54 km) SW | Waynesville-St. Robert Regional Airport (TBN) | Fort Leonard Wood, Missouri, United States | |
| 15 | 108.92 miles (175.29 km) SE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,971.17 miles (17,656.34 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,949.13 miles (17,620.87 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,926.55 miles (17,584.53 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,923.06 miles (17,578.91 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,896.68 miles (17,536.47 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,881.10 miles (17,511.39 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,872.02 miles (17,496.77 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,869.55 miles (17,492.80 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,847.98 miles (17,458.09 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,835.21 miles (17,437.54 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,828.15 miles (17,426.17 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,816.43 miles (17,407.31 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,781.73 miles (17,351.47 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,781.61 miles (17,351.28 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 15 | 10,777.09 miles (17,344.00 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 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 | |