Nonstop flight route between St. Helens, Tasmania, Australia and Ukiah, California, United States:
Departure Airport:
(41°20'12"S by 148°16'54"E)
Arrival Airport:
(39°7'32"N by 123°12'2"W)
Distance from HLS to UKI:
7,854.89 miles (12,641.19 km)
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Jump to:
- About this route
- HLS Airport Information
- UKI Airport Information
- Facts about HLS
- Facts about UKI
- 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 UKI
- List of Nearest Airports to UKI
- Map of Furthest Airports from UKI
- List of Furthest Airports from UKI
About this route:
A direct, nonstop flight between St Helens Airport (HLS), St. Helens, Tasmania, Australia and Ukiah Municipal Airport (UKI), Ukiah, California, United States would travel a Great Circle distance of 7,855 miles (or 12,641 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 Ukiah Municipal 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 Ukiah Municipal 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: | UKI / KUKI |
| Airport Name: | Ukiah Municipal Airport |
| Location: | Ukiah, California, United States |
| GPS Coordinates: | 39°7'32"N by 123°12'2"W |
| Operator/Owner: | City of Ukiah |
| Airport Type: | Public |
| Elevation: | 614 feet (187 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from UKI |
| More Information: | UKI Maps & Info |
Facts about St Helens Airport (HLS):
- The closest airport to St Helens Airport (HLS) is Launceston Airport (LST), which is located 57 miles (92 kilometers) WSW of HLS.
- 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.
- St Helens Airport (HLS) currently has only 1 runway.
- 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.
Facts about Ukiah Municipal Airport (UKI):
- Staffing at the base consists of one battalion chief and one fire captain, one fire apparatus engineer, and several firefighters.
- Ukiah Municipal Airport is a public airport located one mile south of Ukiah, serving Mendocino County, California, USA.
- The closest airport to Ukiah Municipal Airport (UKI) is Charles M. Schulz–Sonoma County Airport (STS), which is located 47 miles (76 kilometers) SSE of UKI.
- The furthest airport from Ukiah Municipal Airport (UKI) is Tôlanaro Airport (FTU), which is located 11,307 miles (18,197 kilometers) away in Tôlanaro, Madagascar.
- Ukiah Municipal Airport (UKI) currently has only 1 runway.
- Because of Ukiah Municipal Airport's relatively low elevation of 614 feet, planes can take off or land at Ukiah Municipal 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.
| 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 | 47.47 miles (76.40 km) SSE | Charles M. Schulz–Sonoma County Airport (STS) | Santa Rosa, California, United States | |
| 2 | 59.08 miles (95.08 km) ENE | Willows-Glenn County Airport (WLW) | Willows, California, United States | |
| 3 | 76.27 miles (122.74 km) SSE | Marin County Airport (NOT) | Novato, California, United States | |
| 4 | 80.25 miles (129.15 km) SE | Napa County Airport (APC) | Napa, California, United States | |
| 5 | 84.44 miles (135.89 km) SE | Nut Tree Airport (VCB) | Vacaville, California, United States | |
| 6 | 85.25 miles (137.20 km) ENE | Chico Municipal Airport (CIC) | Chico, California, United States | |
| 7 | 86.96 miles (139.96 km) NE | Red Bluff Municipal Airport (RBL) | Red Bluff, California, United States | |
| 8 | 87.47 miles (140.76 km) E | Yuba County Airport (MYV) | Marysville, California, United States | |
| 9 | 88.03 miles (141.68 km) ENE | Oroville Municipal Airport (OVE) | Oroville, California, United States | |
| 10 | 90.94 miles (146.36 km) SE | Travis Air Force Base Fairfield-Suisun Army Airfield (SUU) | Fairfield, California, United States | |
| 11 | 91.52 miles (147.29 km) ESE | Sacramento International Airport (SMF) | Sacramento, California, United States | |
| 12 | 94.57 miles (152.19 km) E | Beale Air Force Base (BAB) | Marysville, California, United States | |
| 13 | 99.91 miles (160.78 km) SE | Buchanan FieldConcord Army Air Base (CCR) | Concord, California, United States | |
| 14 | 101.21 miles (162.89 km) ESE | Sacramento Executive Airport (SAC) | Sacramento, California, United States | |
| 15 | 101.85 miles (163.91 km) ESE | Sacramento Airport McClellan Airfield (MCC) | Sacramento, California, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,307.36 miles (18,197.39 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 11,216.94 miles (18,051.87 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 11,203.96 miles (18,030.99 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 11,174.53 miles (17,983.62 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 11,143.98 miles (17,934.45 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 11,101.26 miles (17,865.71 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 11,087.20 miles (17,843.07 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 8 | 11,042.61 miles (17,771.32 km) SSW | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 9 | 11,016.05 miles (17,728.56 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 11,007.66 miles (17,715.07 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,998.28 miles (17,699.98 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,925.59 miles (17,582.99 km) SSE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 13 | 10,925.20 miles (17,582.37 km) SSE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 14 | 10,918.25 miles (17,571.18 km) SSE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 15 | 10,907.91 miles (17,554.53 km) SSE | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |