Nonstop flight route between Decatur, Alabama, United States and St. Mary's, Alaska, United States:
Departure Airport:
(34°39'15"N by 86°56'43"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from DCU to KSM:
3,704.20 miles (5,961.31 km)
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Jump to:
- About this route
- DCU Airport Information
- KSM Airport Information
- Facts about DCU
- Facts about KSM
- Map of Nearest Airports to DCU
- List of Nearest Airports to DCU
- Map of Furthest Airports from DCU
- List of Furthest Airports from DCU
- 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 Pryor Field Regional Airport (DCU), Decatur, Alabama, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,704 miles (or 5,961 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 Pryor Field 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 Pryor Field 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: | DCU / KDCU |
| Airport Name: | Pryor Field Regional Airport |
| Location: | Decatur, Alabama, United States |
| GPS Coordinates: | 34°39'15"N by 86°56'43"W |
| Area Served: | Decatur, Alabama |
| Operator/Owner: | Decatur/Athens Airport Authority |
| Airport Type: | Public |
| Elevation: | 592 feet (180 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from DCU |
| More Information: | DCU 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 Pryor Field Regional Airport (DCU):
- In January 2010, the pilot training site was designated a historic landmark and added to the Alabama Register of Landmarks and Heritage.
- The Pryor Field Regional Airport receives $30,000 annually each from the cities of Athens and Decatur and from the county commissions of Morgan and Limestone
- Pryor Field Regional Airport covers an area of 200 acres which contains one asphalt paved runway measuring 6,107 x 100 ft.
- A newly built $1.8 million terminal building opened in 2008 at the north end of the field as part of a federally funded $3.3 million project.
- Situated next to Calhoun Community College, the airport serves the western portion of the Huntsville-Decatur Combined Statistical Area and most of the Decatur Metropolitan Area.
- Pryor Field Regional Airport (DCU) currently has only 1 runway.
- Because of Pryor Field Regional Airport's relatively low elevation of 592 feet, planes can take off or land at Pryor Field Regional 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 Pryor Field Regional Airport (DCU) is Huntsville International Airport (HSV), which is located only 10 miles (16 kilometers) E of DCU.
- The furthest airport from Pryor Field Regional Airport (DCU) is Margaret River Airport (MGV), which is located 11,180 miles (17,992 kilometers) away in Margaret River, Western Australia, Australia.
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.
- 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.
- St. Mary's Airport (KSM) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 9.75 miles (15.69 km) E | Huntsville International Airport (HSV) | Huntsville / Decatur, Alabama, United States |     |
| 2 | 14.90 miles (23.98 km) E | Redstone Army Airfield (AAF) (HUA) | Redstone Arsenal (near Huntsville), Alabama, United States | |
| 3 | 35.39 miles (56.96 km) NE | Fayetteville Municipal Airport (FYM) | Fayetteville, Tennessee, United States | |
| 4 | 38.30 miles (61.63 km) W | Northwest Alabama Regional Airport (MSL) | Muscle Shoals, Alabama, United States | |
| 5 | 63.59 miles (102.34 km) NNW | Maury County Airport (MRC) | Columbia/Mount Pleasant, Tennessee, United States | |
| 6 | 63.86 miles (102.77 km) NE | Tullahoma Regional Airport (THA) | Tullahoma, Tennessee, United States | |
| 7 | 67.85 miles (109.19 km) SE | Northeast Alabama Regional Airport (GAD) | Gadsden, Alabama, United States | |
| 8 | 68.70 miles (110.56 km) NNE | Shelbyville Municipal Airport (SYI) | Shelbyville, Tennessee, United States | |
| 9 | 70.49 miles (113.44 km) ENE | Franklin County Airport (UOS) | Sewanee, Tennessee, United States | |
| 10 | 70.57 miles (113.57 km) WSW | Marion County - Rankin Fite Airport (HAB) | Hamilton, Alabama, United States | |
| 11 | 76.14 miles (122.53 km) S | Birmingham-Shuttlesworth International Airport (BHM) | Birmingham, Alabama, United States | |
| 12 | 82.06 miles (132.06 km) ENE | Marion County Airport (APT) | Jasper, Tennessee, United States | |
| 13 | 85.51 miles (137.62 km) SSE | St. Clair County Airport (PLR) | Pell City, Alabama, United States | |
| 14 | 86.47 miles (139.16 km) NNW | Centerville Municipal Airport (GHM) | Centerville, Tennessee, United States | |
| 15 | 90.74 miles (146.03 km) SE | Talladega Municipal Airport (ASN) | Talladega, Alabama, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,179.89 miles (17,992.25 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,160.27 miles (17,960.66 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,140.94 miles (17,929.56 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 11,128.73 miles (17,909.90 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 5 | 11,124.24 miles (17,902.69 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 6 | 11,122.62 miles (17,900.07 km) W | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 7 | 11,110.85 miles (17,881.13 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,104.61 miles (17,871.09 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 9 | 11,103.33 miles (17,869.03 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,097.40 miles (17,859.49 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 11 | 11,074.48 miles (17,822.60 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 12 | 11,050.67 miles (17,784.29 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 13 | 11,041.81 miles (17,770.02 km) W | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 11,035.79 miles (17,760.33 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 15 | 11,032.55 miles (17,755.12 km) W | Katanning Airport (KNI) | Katanning, 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 | |