Nonstop flight route between Thompson, Manitoba, Canada and St. Mary's, Alaska, United States:
Departure Airport:
(55°48'16"N by 97°51'44"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from YTH to KSM:
2,269.14 miles (3,651.81 km)
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Jump to:
- About this route
- YTH Airport Information
- KSM Airport Information
- Facts about YTH
- Facts about KSM
- Map of Nearest Airports to YTH
- List of Nearest Airports to YTH
- Map of Furthest Airports from YTH
- List of Furthest Airports from YTH
- 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 Thompson Municipal Airport (YTH), Thompson, Manitoba, Canada and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 2,269 miles (or 3,652 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 Thompson Municipal Airport and St. Mary's Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | YTH / CYTH |
| Airport Name: | Thompson Municipal Airport |
| Location: | Thompson, Manitoba, Canada |
| GPS Coordinates: | 55°48'16"N by 97°51'44"W |
| Area Served: | Thompson, Manitoba |
| Operator/Owner: | Thompson Regional Airport Authority |
| Airport Type: | Public |
| Elevation: | 735 feet (224 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from YTH |
| More Information: | YTH 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 Thompson Municipal Airport (YTH):
- Because of Thompson Municipal Airport's relatively low elevation of 735 feet, planes can take off or land at Thompson 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 closest airport to Thompson Municipal Airport (YTH) is Thicket Portage Airport (YTD), which is located 34 miles (55 kilometers) S of YTH.
- Thompson Airport was developed originally by the International Nickel Company in 1961 to support their mining operations and had one runway 3,000 ft in length.
- Thompson Municipal Airport (YTH) has 2 runways.
- The furthest airport from Thompson Municipal Airport (YTH) is Margaret River Airport (MGV), which is located 10,263 miles (16,516 kilometers) away in Margaret River, Western Australia, Australia.
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.
- St. Mary's Airport (KSM) has 2 runways.
- 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 | 34.11 miles (54.89 km) S | Thicket Portage Airport (YTD) | Thicket Portage, Manitoba, Canada |     |
| 2 | 54.90 miles (88.36 km) ENE | Kelsey Airport (KES) | Kelsey, Manitoba, Canada | |
| 3 | 71.37 miles (114.86 km) ENE | York Landing Airport (ZAC) | York Landing, Manitoba, Canada | |
| 4 | 79.15 miles (127.38 km) NNW | South Indian Lake Airport (XSI) | South Indian Lake, Manitoba, Canada | |
| 5 | 82.59 miles (132.91 km) S | Cross Lake (Charlie Sinclair Memorial) Airport (YCR) | Cross Lake, Manitoba, Canada | |
| 6 | 88.53 miles (142.48 km) ENE | Ilford Airport (ILF) | Ilford, Manitoba, Canada | |
| 7 | 89.14 miles (143.45 km) S | Jenpeg Airport (ZJG) | Jenpeg, Manitoba, Canada | |
| 8 | 95.22 miles (153.25 km) WNW | Leaf Rapids Airport (YLR) | Leaf Rapids, Manitoba, Canada | |
| 9 | 117.97 miles (189.85 km) ESE | Oxford House Airport (YOH) | Oxford House, Manitoba, Canada | |
| 10 | 127.37 miles (204.98 km) ENE | Gillam Airport (YGX) | Gillam, Manitoba, Canada | |
| 11 | 127.58 miles (205.31 km) S | Norway House Airport (YNE) | Norway House, Manitoba, Canada | |
| 12 | 132.31 miles (212.94 km) W | Pukatawagan Airport (XPK) | Pukatawagan, Manitoba, Canada | |
| 13 | 135.12 miles (217.45 km) ESE | Knee Lake Airport (YKE) | Knee Lake, Manitoba, Canada | |
| 14 | 136.36 miles (219.45 km) WNW | Laurie River Airport (LRQ) | Laurie River, Manitoba, Canada | |
| 15 | 143.20 miles (230.45 km) WNW | Lynn Lake Airport (YYL) | Lynn Lake, Manitoba, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,262.60 miles (16,516.02 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,246.04 miles (16,489.37 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 3 | 10,238.91 miles (16,477.89 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 4 | 10,225.50 miles (16,456.31 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 5 | 10,212.27 miles (16,435.01 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 6 | 10,162.73 miles (16,355.28 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 7 | 10,139.22 miles (16,317.45 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 10,133.07 miles (16,307.56 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 9 | 10,121.28 miles (16,288.57 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 10,056.91 miles (16,184.99 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 10,014.94 miles (16,117.44 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |
| 12 | 9,979.67 miles (16,060.69 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 13 | 9,961.53 miles (16,031.49 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 9,935.04 miles (15,988.86 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 9,928.10 miles (15,977.69 km) SW | Kalbarri Airport (KAX) | Kalbarri, 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 | |