Nonstop flight route between Willow Grove, Pennsylvania, United States and St. Mary's, Alaska, United States:
Departure Airport:
(40°11'59"N by 75°8'53"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from NXX to KSM:
3,760.47 miles (6,051.88 km)
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- About this route
- NXX Airport Information
- KSM Airport Information
- Facts about NXX
- Facts about KSM
- Map of Nearest Airports to NXX
- List of Nearest Airports to NXX
- Map of Furthest Airports from NXX
- List of Furthest Airports from NXX
- 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 NAS JRB Willow Grove (NXX), Willow Grove, Pennsylvania, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,760 miles (or 6,052 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 NAS JRB Willow Grove 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 NAS JRB Willow Grove 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: | NXX / KNXX |
| Airport Name: | NAS JRB Willow Grove |
| Location: | Willow Grove, Pennsylvania, United States |
| GPS Coordinates: | 40°11'59"N by 75°8'53"W |
| Operator/Owner: | United States Navy |
| Airport Type: | Military: Naval Air Station |
| Elevation: | 335 feet (102 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from NXX |
| More Information: | NXX 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 NAS JRB Willow Grove (NXX):
- Final closure of NAS JRB Willow Grove occurred on September 15, 2011.
- Currently, the 111th Fighter Wing, operating the A-10 Thunderbolt II, has lost all its aircraft to other ANG Squadrons under BRAC.
- After the start of World War II, the United States purchased the property, under threat of eminent domain.
- NAS JRB Willow Grove (NXX) currently has only 1 runway.
- Because of NAS JRB Willow Grove's relatively low elevation of 335 feet, planes can take off or land at NAS JRB Willow Grove 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 NAS JRB Willow Grove (NXX) is Margaret River Airport (MGV), which is located 11,726 miles (18,871 kilometers) away in Margaret River, Western Australia, Australia.
- The airfield shut down on March 31, 2011.
- The closest airport to NAS JRB Willow Grove (NXX) is Wings Field (BBX), which is located only 8 miles (12 kilometers) SW of NXX.
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.
- 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.
- 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 | 7.52 miles (12.10 km) SW | Wings Field (BBX) | Blue Bell, Pennsylvania, United States |     |
| 2 | 9.31 miles (14.98 km) N | Doylestown Airport (DYL) | Doylestown, Pennsylvania, United States | |
| 3 | 10.92 miles (17.57 km) SE | Northeast Philadelphia Airport (PNE) | Philadelphia, Pennsylvania, United States | |
| 4 | 18.44 miles (29.68 km) ENE | Trenton-Mercer Airport (TTN) | Trenton, New Jersey, United States | |
| 5 | 20.41 miles (32.85 km) NW | Quakertown Airport (UKT) | Quakertown, Pennsylvania, United States | |
| 6 | 21.72 miles (34.96 km) W | Heritage Field (PTW) | Pottstown, Pennsylvania, United States | |
| 7 | 23.18 miles (37.30 km) SSW | Philadelphia International Airport (PHL) | Philadelphia, Pennsylvania, United States | |
| 8 | 23.89 miles (38.45 km) SE | South Jersey Regional Airport (LLY) | Mount Holly, New Jersey, United States | |
| 9 | 24.78 miles (39.87 km) SSW | Philadelphia Seaplane BaseChandler Field (PSQ) | Essington, Pennsylvania, United States | |
| 10 | 27.12 miles (43.65 km) WSW | Brandywine Airport (OQN) | West Chester, Pennsylvania, United States | |
| 11 | 29.23 miles (47.05 km) ENE | Princeton Airport (PCT) | Princeton/Rocky Hill, New Jersey, United States | |
| 12 | 32.05 miles (51.57 km) ESE | McGuire AFB (WRI) | Wrightstown, New Jersey, United States | |
| 13 | 34.84 miles (56.07 km) NNW | Lehigh Valley International Airport (ABE) | Allentown, Pennsylvania, United States | |
| 14 | 36.62 miles (58.94 km) NE | Central Jersey Regional Airport (JVI) | Manville, New Jersey, United States | |
| 15 | 40.88 miles (65.78 km) WSW | Chester County G. O. Carlson Airport (CTH) | Coatesville, Pennsylvania, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,725.65 miles (18,870.56 km) SW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,701.64 miles (18,831.92 km) SW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,693.59 miles (18,818.96 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,675.60 miles (18,790.01 km) SW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,640.80 miles (18,734.01 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,615.51 miles (18,693.31 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,606.14 miles (18,678.22 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,600.56 miles (18,669.24 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 9 | 11,594.86 miles (18,660.07 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,544.26 miles (18,578.64 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,470.88 miles (18,460.54 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,448.55 miles (18,424.60 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,425.24 miles (18,387.10 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 11,419.57 miles (18,377.97 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 15 | 11,399.46 miles (18,345.61 km) WSW | Esperance Airport (EPR) | Esperance, 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 | |