Nonstop flight route between St. Helens, Tasmania, Australia and Napa, California, United States:
Departure Airport:
(41°20'12"S by 148°16'54"E)
Arrival Airport:
(38°12'47"N by 122°16'50"W)
Distance from HLS to APC:
7,859.50 miles (12,648.60 km)
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Jump to:
- About this route
- HLS Airport Information
- APC Airport Information
- Facts about HLS
- Facts about APC
- Map of Nearest Airports to HLS
- List of Nearest Airports to HLS
- Map of Furthest Airports from HLS
- List of Furthest Airports from HLS
- Map of Nearest Airports to APC
- List of Nearest Airports to APC
- Map of Furthest Airports from APC
- List of Furthest Airports from APC
About this route:
A direct, nonstop flight between St Helens Airport (HLS), St. Helens, Tasmania, Australia and Napa County Airport (APC), Napa, California, United States would travel a Great Circle distance of 7,859 miles (or 12,649 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 Helens Airport and Napa County 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 Helens Airport and Napa County Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | HLS / YSTH |
| Airport Name: | St Helens Airport |
| Location: | St. Helens, Tasmania, Australia |
| GPS Coordinates: | 41°20'12"S by 148°16'54"E |
| Operator/Owner: | Break O'Day Council |
| Airport Type: | Public |
| Elevation: | 158 feet (48 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HLS |
| More Information: | HLS Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | APC / KAPC |
| Airport Names: |
|
| Location: | Napa, California, United States |
| GPS Coordinates: | 38°12'47"N by 122°16'50"W |
| Operator/Owner: | Napa County |
| Airport Type: | Public Public Works |
| Elevation: | 35 feet (11 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from APC |
| More Information: | APC Maps & Info |
Facts about St Helens Airport (HLS):
- St Helens Airport (HLS) currently has only 1 runway.
- Because of St Helens Airport's relatively low elevation of 158 feet, planes can take off or land at St Helens 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 furthest airport from St Helens Airport (HLS) is Corvo Airport (CVU), which is nearly antipodal to St Helens Airport (meaning St Helens Airport is almost on the exact opposite side of the Earth from Corvo Airport), and is located 12,317 miles (19,823 kilometers) away in Corvo Island, Azores, Portugal.
- The closest airport to St Helens Airport (HLS) is Launceston Airport (LST), which is located 57 miles (92 kilometers) WSW of HLS.
Facts about Napa County Airport (APC):
- The furthest airport from Napa County Airport (APC) is Tôlanaro Airport (FTU), which is located 11,330 miles (18,233 kilometers) away in Tôlanaro, Madagascar.
- In addition to being known as "Napa County Airport", another name for APC is "Napa Army Airfield".
- Because of Napa County Airport's relatively low elevation of 35 feet, planes can take off or land at Napa County 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 Napa County Airport (APC) is Marin County Airport (NOT), which is located only 16 miles (25 kilometers) WSW of APC.
- The airport was built by the United States Army Air Forces about 1942, and was known as Napa Flight Strip.
- Napa County Airport (APC) has 3 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 57.09 miles (91.88 km) WSW | Launceston Airport (LST) | Launceston, Tasmania, Australia |     |
| 2 | 77.01 miles (123.93 km) WNW | George Town Aerodrome (GEE) | George Town, Tasmania, Australia | |
| 3 | 87.36 miles (140.59 km) N | Flinders Island Airport (FLS) | Flinders Island, Tasmania, Australia | |
| 4 | 96.86 miles (155.88 km) W | Devonport Airport (DPO) | Devonport, Tasmania, Australia | |
| 5 | 110.94 miles (178.53 km) SSW | Hobart International Airport (HBA) | Hobart, Tasmania, Australia | |
| 6 | 134.69 miles (216.77 km) W | Burnie Airport (BWT) | Burnie, Tasmania, Australia | |
| 7 | 170.12 miles (273.78 km) W | Smithton Airport (SIO) | Smithton, Tasmania, Australia | |
| 8 | 241.32 miles (388.37 km) N | Bairnsdale Aerodrome (BSJ) | Bairnsdale, Victoria, Australia | |
| 9 | 251.98 miles (405.52 km) WNW | King Island Airport (KNS) | Currie, Tasmania, Australia | |
| 10 | 287.23 miles (462.24 km) NW | Moorabbin Harry Hawker Airport (MBW) | Moorabbin, Victoria, Australia | |
| 11 | 300.22 miles (483.16 km) NW | Geelong Airport (GEX) | Grovedale, Victoria, Australia | |
| 12 | 300.66 miles (483.86 km) N | Mount Hotham Airport (MHU) | Mount Hotham, Victoria, Australia | |
| 13 | 307.52 miles (494.90 km) NW | Essendon Airport (MEB) | Melbourne, Victoria, Australia | |
| 14 | 312.45 miles (502.84 km) NW | Melbourne Airport (MEL) | Melbourne, Victoria, Australia | |
| 15 | 315.73 miles (508.12 km) NW | Avalon Airport (AVV) | Avalon, Victoria, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,317.39 miles (19,822.86 km) NNW | Corvo Airport (CVU) | Corvo Island, Azores, Portugal | |
| 2 | 12,303.39 miles (19,800.33 km) NNW | Flores Airport (FLW) | Flores Island, Azores, Portugal | |
| 3 | 12,187.96 miles (19,614.57 km) NW | Graciosa Airport (GRW) | Graciosa Island, Azores, Portugal | |
| 4 | 12,185.49 miles (19,610.60 km) NW | Horta International Airport (HOR) | Horta, Azores, Portugal | |
| 5 | 12,177.83 miles (19,598.28 km) NW | Pico Airport (PIX) | Pico Island, Azores, Portugal | |
| 6 | 12,134.30 miles (19,528.22 km) NW | Lajes Air Base (TER) | Lajes, Azores, Portugal | |
| 7 | 12,031.26 miles (19,362.39 km) NW | João Paulo II Airport (PDL) | Ponta Delgada, Azores, Portugal | |
| 8 | 11,974.54 miles (19,271.10 km) NW | Santa Maria Airport (SMA) | Santa Maria, Portugal | |
| 9 | 11,421.39 miles (18,380.90 km) WNW | Madeira Airport (FNC) | Funchal, Madeira, Portugal | |
| 10 | 11,418.70 miles (18,376.57 km) WNW | Porto Santo Airport (PXO) | Porto Santo, Madeira, Portugal | |
| 11 | 11,317.17 miles (18,213.17 km) ENE | St. John's International Airport (YYT) | St. John's, Newfoundland and Labrador, Canada | |
| 12 | 11,258.38 miles (18,118.57 km) NW | La Palma Airport (SPC) | La Palma, Canary Islands, Spain | |
| 13 | 11,249.17 miles (18,103.75 km) W | Vigo Airport (VGO) | Vigo, Galicia, Spain | |
| 14 | 11,244.10 miles (18,095.58 km) W | Francisco Sá Carneiro Airport (OPO) | Porto, Portugal | |
| 15 | 11,241.46 miles (18,091.33 km) WNW | Santiago de Compostela Airport (SCQ) | Santiago de Compostela, Spain | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 15.71 miles (25.29 km) WSW | Marin County Airport (NOT) | Novato, California, United States | |
| 2 | 19.47 miles (31.34 km) E | Travis Air Force Base Fairfield-Suisun Army Airfield (SUU) | Fairfield, California, United States | |
| 3 | 19.66 miles (31.64 km) SE | Buchanan FieldConcord Army Air Base (CCR) | Concord, California, United States | |
| 4 | 20.70 miles (33.32 km) ENE | Nut Tree Airport (VCB) | Vacaville, California, United States | |
| 5 | 34.14 miles (54.94 km) S | Oakland International Airport (OAK) | Oakland (near San Francisco), California, United States | |
| 6 | 35.33 miles (56.86 km) NW | Charles M. Schulz–Sonoma County Airport (STS) | Santa Rosa, California, United States | |
| 7 | 39.27 miles (63.19 km) SSE | Hayward Executive Airport (HWD) | Hayward, California, United States | |
| 8 | 41.38 miles (66.60 km) S | San Francisco International Airport (SFO) | San Francisco, California, United States | |
| 9 | 43.80 miles (70.50 km) SE | Livermore Municipal Airport (LVK) | Livermore, California, United States | |
| 10 | 47.40 miles (76.29 km) ENE | Sacramento Executive Airport (SAC) | Sacramento, California, United States | |
| 11 | 49.83 miles (80.19 km) SSW | Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF) | Half Moon Bay, California, United States | |
| 12 | 50.04 miles (80.53 km) NE | Sacramento International Airport (SMF) | Sacramento, California, United States | |
| 13 | 52.74 miles (84.88 km) S | Palo Alto Airport of Santa Clara County (PAO) | Palo Alto, California, United States | |
| 14 | 56.59 miles (91.07 km) SSE | Moffett Federal Airfield (NUQ) | Mountain View, California, United States | |
| 15 | 57.05 miles (91.82 km) ENE | Sacramento Airport McClellan Airfield (MCC) | Sacramento, California, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,329.75 miles (18,233.42 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 11,261.74 miles (18,123.97 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 11,232.69 miles (18,077.22 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 4 | 11,232.16 miles (18,076.37 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 5 | 11,208.10 miles (18,037.64 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 11,135.91 miles (17,921.46 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 11,117.58 miles (17,891.96 km) SSW | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 8 | 11,117.31 miles (17,891.53 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 11,032.57 miles (17,755.15 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 11,028.82 miles (17,749.11 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 11,015.87 miles (17,728.28 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,960.63 miles (17,639.39 km) SSE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 13 | 10,959.76 miles (17,637.98 km) SSE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 14 | 10,953.04 miles (17,627.17 km) SSE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,932.82 miles (17,594.62 km) SE | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |