Nonstop flight route between St. Mary's, Alaska, United States and Eastmain, Quebec, Canada:
Departure Airport:
(62°3'38"N by 163°18'6"W)
Arrival Airport:
(52°13'35"N by 78°31'20"W)
Distance from KSM to ZEM:
3,011.03 miles (4,845.77 km)
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Jump to:
- About this route
- KSM Airport Information
- ZEM Airport Information
- Facts about KSM
- Facts about ZEM
- 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 ZEM
- List of Nearest Airports to ZEM
- Map of Furthest Airports from ZEM
- List of Furthest Airports from ZEM
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Eastmain River Airport (ZEM), Eastmain, Quebec, Canada would travel a Great Circle distance of 3,011 miles (or 4,846 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 Eastmain River 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 Eastmain River 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: | ZEM / CZEM |
| Airport Name: | Eastmain River Airport |
| Location: | Eastmain, Quebec, Canada |
| GPS Coordinates: | 52°13'35"N by 78°31'20"W |
| Operator/Owner: | Eastmain River Band Council |
| Airport Type: | Public |
| Elevation: | 24 feet (7 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from ZEM |
| More Information: | ZEM Maps & Info |
Facts about St. Mary's Airport (KSM):
- 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.
- 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 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.
Facts about Eastmain River Airport (ZEM):
- Eastmain River Airport (ZEM) currently has only 1 runway.
- The furthest airport from Eastmain River Airport (ZEM) is Margaret River Airport (MGV), which is located 11,003 miles (17,708 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Eastmain River Airport's relatively low elevation of 24 feet, planes can take off or land at Eastmain River 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 Eastmain River Airport (ZEM) is Waskaganish Airport (YKQ), which is located 53 miles (85 kilometers) S of ZEM.
| 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 | 53.00 miles (85.29 km) S | Waskaganish Airport (YKQ) | Waskaganish, Quebec, Canada | |
| 2 | 55.71 miles (89.65 km) NNW | Wemindji Airport (YNC) | Wemindji, Quebec, Canada | |
| 3 | 102.49 miles (164.94 km) NNE | La Grande Rivière Airport (YGL) | Radisson, Quebec, Canada | |
| 4 | 108.14 miles (174.04 km) ESE | Nemiscau Airport (YNS) | Nemiscau, Quebec, Canada | |
| 5 | 110.11 miles (177.21 km) SW | Moosonee Airport (YMO) | Moosonee, Ontario, Canada | |
| 6 | 110.35 miles (177.60 km) N | Chisasibi Airport (YKU) | Chisasibi, Quebec, Canada | |
| 7 | 133.50 miles (214.85 km) W | Kashechewan Airport (ZKE) | Kashechewan, Ontario, Canada | |
| 8 | 134.30 miles (216.13 km) NE | La Grande-3 Airport (YAR) | Northern Quebec, Canada | |
| 9 | 134.34 miles (216.19 km) W | Fort Albany Airport (YFA) | Fort Albany, Ontario, Canada | |
| 10 | 171.12 miles (275.39 km) WNW | Attawapiskat Airport (YAT) | Attawapiskat, Ontario, Canada | |
| 11 | 173.15 miles (278.65 km) S | Matagami Airport (YNM) | Matagami, Quebec, Canada | |
| 12 | 213.37 miles (343.38 km) N | Kuujjuarapik Airport (YGW) | Kuujjuarapik, Quebec, Canada | |
| 13 | 227.51 miles (366.15 km) ENE | La Grande-4 Airport (YAH) | Northern Quebec, Canada | |
| 14 | 230.46 miles (370.89 km) SSE | Lebel-sur-Quévillon Airport (YLS) | Lebel-sur-Quévillon, Quebec, Canada | |
| 15 | 230.49 miles (370.93 km) S | La Sarre Airport (SSQ) | La Sarre, Quebec, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,003.25 miles (17,707.97 km) SSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,999.14 miles (17,701.36 km) SW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 3 | 10,997.02 miles (17,697.95 km) SW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 4 | 10,980.90 miles (17,672.00 km) SW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 5 | 10,954.88 miles (17,630.13 km) SW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 6 | 10,925.34 miles (17,582.59 km) SW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 7 | 10,871.15 miles (17,495.38 km) SSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 10,869.12 miles (17,492.11 km) SSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 9 | 10,857.15 miles (17,472.85 km) SSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 10,805.51 miles (17,389.74 km) SW | Esperance Airport (EPR) | Esperance, Australia | |
| 11 | 10,772.35 miles (17,336.37 km) SSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 12 | 10,681.48 miles (17,190.13 km) SSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 13 | 10,680.57 miles (17,188.67 km) SSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,663.80 miles (17,161.68 km) SW | Kambalda Airport (KDB) | Kambalda, Western Australia, Australia | |
| 15 | 10,653.11 miles (17,144.48 km) SW | Windarling Airport (WRN) | Windarling, Australia | |