Nonstop flight route between Alamosa, Colorado, United States and St. Mary's, Alaska, United States:
Departure Airport:
(37°26'6"N by 105°51'59"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from ALS to KSM:
2,936.57 miles (4,725.94 km)
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Jump to:
- About this route
- ALS Airport Information
- KSM Airport Information
- Facts about ALS
- Facts about KSM
- Map of Nearest Airports to ALS
- List of Nearest Airports to ALS
- Map of Furthest Airports from ALS
- List of Furthest Airports from ALS
- 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 San Luis Valley Regional Airport (ALS), Alamosa, Colorado, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 2,937 miles (or 4,726 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 San Luis Valley Regional 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 San Luis Valley Regional 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: | ALS / KALS |
| Airport Names: |
|
| Location: | Alamosa, Colorado, United States |
| GPS Coordinates: | 37°26'6"N by 105°51'59"W |
| Area Served: | Alamosa, Colorado |
| Operator/Owner: | City and County of Alamosa |
| Airport Type: | Public |
| Elevation: | 7539 feet (2,298 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ALS |
| More Information: | ALS 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 San Luis Valley Regional Airport (ALS):
- San Luis Valley Regional Airport is two miles south of Alamosa, in Alamosa County, Colorado.
- Because of San Luis Valley Regional Airport's high elevation of 7,539 feet, planes must typically fly at a faster airspeed in order to takeoff or land at ALS. Combined with a high temperature, this could make ALS a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- San Luis Valley Regional Airport (ALS) has 2 runways.
- In addition to being known as "San Luis Valley Regional Airport", another name for ALS is "Bergman Field".
- The closest airport to San Luis Valley Regional Airport (ALS) is Stevens Field (FAA: PSO) (PGO), which is located 66 miles (106 kilometers) W of ALS.
- The furthest airport from San Luis Valley Regional Airport (ALS) is Sir Gaëtan Duval Airport (RRG), which is located 11,054 miles (17,790 kilometers) away in Rodrigues Island, Mauritius.
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.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 66.06 miles (106.31 km) W | Stevens Field (FAA: PSO) (PGO) | Pagosa Springs, Colorado, United States |     |
| 2 | 68.34 miles (109.99 km) S | Taos Regional Airport (TSM) | Taos, New Mexico, United States | |
| 3 | 76.88 miles (123.72 km) N | Harriet Alexander Field (SLT) | Salida, Colorado, United States | |
| 4 | 84.68 miles (136.27 km) E | Perry Stokes Airport (TAD) | Trinidad, Colorado, United States | |
| 5 | 89.15 miles (143.47 km) ESE | Raton Municipal Airport (RTN) | Raton, New Mexico, United States | |
| 6 | 95.22 miles (153.25 km) NE | Pueblo Memorial Airport (PUB) | Pueblo, Colorado, United States | |
| 7 | 95.60 miles (153.85 km) NW | Gunnison-Crested Butte Regional Airport (GUC) | Gunnison, Colorado, United States | |
| 8 | 97.85 miles (157.47 km) S | Ohkay Owingeh Airport (ESO) | Española, New Mexico, United States | |
| 9 | 105.58 miles (169.92 km) W | Durango–La Plata County Airport (DRO) | Durango, Colorado, United States | |
| 10 | 109.75 miles (176.62 km) SSW | Los Alamos Airport (LAM) | Los Alamos, New Mexico, United States | |
| 11 | 111.21 miles (178.97 km) W | Animas Air Park (AMK) | Durango, Colorado, United States | |
| 12 | 113.95 miles (183.38 km) NNE | City of Colorado Springs Municipal Airport (COS) | Colorado Springs, Colorado, United States | |
| 13 | 117.26 miles (188.72 km) WNW | Telluride Regional Airport (TEX) | Telluride, Colorado, United States | |
| 14 | 120.59 miles (194.07 km) NNE | United States Air Force Academy (AFF) | Colorado Springs, Colorado, United States | |
| 15 | 125.74 miles (202.36 km) N | Lake County Airport (LXV) | Leadville, Colorado, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,053.98 miles (17,789.62 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,902.39 miles (17,545.65 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,859.12 miles (17,476.02 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,840.30 miles (17,445.72 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,626.52 miles (17,101.68 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,532.16 miles (16,949.83 km) ESE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 10,498.33 miles (16,895.38 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 8 | 10,482.56 miles (16,870.00 km) ESE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,431.12 miles (16,787.21 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 10,398.10 miles (16,734.09 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 11 | 10,377.06 miles (16,700.22 km) ESE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 12 | 10,342.64 miles (16,644.82 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 13 | 10,318.93 miles (16,606.66 km) ESE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 14 | 10,316.24 miles (16,602.35 km) ESE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,309.35 miles (16,591.24 km) ESE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 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 | |