Nonstop flight route between St. Mary's, Alaska, United States and Del Rio, Texas, United States:
Departure Airport:
(62°3'38"N by 163°18'6"W)
Arrival Airport:
(29°22'27"N by 100°55'37"W)
Distance from KSM to DRT:
3,557.56 miles (5,725.33 km)
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- About this route
- KSM Airport Information
- DRT Airport Information
- Facts about KSM
- Facts about DRT
- 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 DRT
- List of Nearest Airports to DRT
- Map of Furthest Airports from DRT
- List of Furthest Airports from DRT
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Del Rio International Airport (DRT), Del Rio, Texas, United States would travel a Great Circle distance of 3,558 miles (or 5,725 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 Del Rio International 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 Del Rio International 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: | DRT / KDRT |
| Airport Name: | Del Rio International Airport |
| Location: | Del Rio, Texas, United States |
| GPS Coordinates: | 29°22'27"N by 100°55'37"W |
| Area Served: | Del Rio, Texas |
| Operator/Owner: | Del Rio / Val Verde County |
| Airport Type: | Public |
| Elevation: | 1002 feet (305 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from DRT |
| More Information: | DRT 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.
- 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.
- 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.
Facts about Del Rio International Airport (DRT):
- The airport is owned by the City of Del Rio with a seven member airport advisory board, appointed by the City Council, monitors the development and operations of the airport.
- ExpressJet operating as United Express served the airport for United Airlines with Embraer ERJ-145s nonstop to Houston Intercontinental Airport before discontinuing it in April 2013.
- The furthest airport from Del Rio International Airport (DRT) is Sir Gaëtan Duval Airport (RRG), which is located 11,249 miles (18,103 kilometers) away in Rodrigues Island, Mauritius.
- Continental Connection had served the airport prior to the merger of Continental Airlines with United Airlines.
- The closest airport to Del Rio International Airport (DRT) is Laughlin Air Force Base (DLF), which is located only 9 miles (15 kilometers) E of DRT.
- Del Rio International Airport (DRT) currently has only 1 runway.
| 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 | 9.04 miles (14.55 km) E | Laughlin Air Force Base (DLF) | Del Rio, Texas, United States | |
| 2 | 10.82 miles (17.41 km) WSW | Ciudad Acuña International Airport (ACN) | Ciudad Acuña, Coahuila, Mexico | |
| 3 | 56.77 miles (91.36 km) SSE | Piedras Negras International Airport (PDS) | Piedras Negras, Coahuila, Mexico | |
| 4 | 72.20 miles (116.20 km) E | Garner Field (UVA) | Uvalde, Texas, United States | |
| 5 | 105.36 miles (169.57 km) E | South Texas Regional Airport at Hondo (HDO) | Hondo, Texas, United States | |
| 6 | 118.13 miles (190.12 km) ENE | Kerrville Municipal Airport (ERV) | Kerrville, Texas, United States | |
| 7 | 121.24 miles (195.12 km) ESE | Cotulla–La Salle County Airport (COT) | Cotulla, Texas, United States | |
| 8 | 139.25 miles (224.10 km) N | San Angelo Regional Airport (SJT) | San Angelo, Texas, United States | |
| 9 | 141.25 miles (227.32 km) E | Lackland Air Force Base Joint Base San Antonio (SKF) | San Antonio, Texas, United States | |
| 10 | 145.46 miles (234.10 km) NNE | Goodfellow Air Force Base (GOF) | San Angelo, Texas, United States | |
| 11 | 147.93 miles (238.07 km) E | Stinson Municipal Airport (SSF) | San Antonio, Texas, United States | |
| 12 | 148.09 miles (238.34 km) E | San Antonio International Airport (SAT) | San Antonio, Texas, United States | |
| 13 | 154.65 miles (248.88 km) SE | Laredo International Airport (LRD) | Laredo, Texas, United States | |
| 14 | 156.79 miles (252.33 km) SSE | Quetzalcóatl International Airport (NLD) | Nuevo Laredo, Mexico | |
| 15 | 157.18 miles (252.95 km) NE | Curtis Field (BBD) | Brady, Texas, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,248.73 miles (18,103.03 km) ESE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,964.03 miles (17,644.86 km) ESE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,862.63 miles (17,481.66 km) ESE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,854.82 miles (17,469.10 km) ESE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,790.51 miles (17,365.59 km) SW | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 6 | 10,446.93 miles (16,812.67 km) E | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 7 | 10,443.38 miles (16,806.95 km) E | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,412.36 miles (16,757.02 km) ESE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 9 | 10,402.66 miles (16,741.41 km) ESE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 10 | 10,394.50 miles (16,728.29 km) SSE | Fuvahmulah Airport (FVM) | Fuvahmulah, Maldives | |
| 11 | 10,375.47 miles (16,697.67 km) E | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 12 | 10,355.18 miles (16,665.01 km) ESE | Antsirabato Airport (ANM) | Antalaha, Madagascar | |
| 13 | 10,334.93 miles (16,632.41 km) SSE | Kaadedhdhoo Airport (KDM) | Kaadedhdhoo Island, Gaafu Dhaalu Atoll, Maldives | |
| 14 | 10,322.49 miles (16,612.40 km) ESE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 15 | 10,318.71 miles (16,606.31 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |