Nonstop flight route between Plymouth, United Kingdom and Helena, Montana, United States:
Departure Airport:
(50°25'22"N by 4°6'20"W)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from PLH to HLN:
4,477.51 miles (7,205.84 km)
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- About this route
- PLH Airport Information
- HLN Airport Information
- Facts about PLH
- Facts about HLN
- Map of Nearest Airports to PLH
- List of Nearest Airports to PLH
- Map of Furthest Airports from PLH
- List of Furthest Airports from PLH
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
About this route:
A direct, nonstop flight between Plymouth City Airport (PLH), Plymouth, United Kingdom and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 4,478 miles (or 7,206 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 Plymouth City Airport and Helena Regional 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 Plymouth City Airport and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PLH / EGHD |
| Airport Name: | Plymouth City Airport |
| Location: | Plymouth, United Kingdom |
| GPS Coordinates: | 50°25'22"N by 4°6'20"W |
| Area Served: | Plymouth |
| Operator/Owner: | Plymouth City Council |
| Airport Type: | Public |
| Elevation: | 476 feet (145 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PLH |
| More Information: | PLH Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | HLN / KHLN |
| Airport Names: |
|
| Location: | Helena, Montana, United States |
| GPS Coordinates: | 46°36'24"N by 111°58'58"W |
| Area Served: | Helena, Montana |
| Operator/Owner: | Helena Regional Airport Authority |
| Airport Type: | Public |
| Elevation: | 3877 feet (1,182 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from HLN |
| More Information: | HLN Maps & Info |
Facts about Plymouth City Airport (PLH):
- The furthest airport from Plymouth City Airport (PLH) is Dunedin International Airport (DUD), which is nearly antipodal to Plymouth City Airport (meaning Plymouth City Airport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,030 miles (19,361 kilometers) away in Dunedin, Otago, New Zealand.
- Plymouth City Airport (PLH) currently has only 1 runway.
- Because of Plymouth City Airport's relatively low elevation of 476 feet, planes can take off or land at Plymouth City 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.
- On 28 July 2011, the last commercial passenger flights operated from the airport.
- Air Southwest had its management head office at the airport, but announced that 12 jobs would be lost and its Plymouth office would close, moving instead to Humberside Airport, which is the main operations base for Eastern Airways.
- The closest airport to Plymouth City Airport (PLH) is Exeter International Airport (EXT), which is located 37 miles (60 kilometers) NE of PLH.
- In 1923, a mail flight, flown by Alan Cobham, to Croydon carried passengers from a grass strip at Chelson Meadow, Plymouth.
- Plymouth City Airport handled 157,933 passengers last year.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport (HLN) has 3 runways.
- The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 37.22 miles (59.90 km) NE | Exeter International Airport (EXT) | Exeter, United Kingdom |     |
| 2 | 39.17 miles (63.03 km) W | Newquay Cornwall Airport (NQY) | Newquay, England, United Kingdom | |
| 3 | 72.56 miles (116.78 km) WSW | Land's End Airport (LEQ) | Land's End, Cornwall, England, United Kingdom | |
| 4 | 73.86 miles (118.86 km) NNE | MoD St Athan (DGX) | St Athan, Wales, United Kingdom | |
| 5 | 75.04 miles (120.77 km) NNE | Cardiff Airport (CWL) | Cardiff, Wales, United Kingdom | |
| 6 | 81.72 miles (131.51 km) N | Swansea Airport (SWS) | Swansea, Wales, United Kingdom | |
| 7 | 89.72 miles (144.39 km) NE | Bristol Airport (BRS) | Bristol, England, United Kingdom | |
| 8 | 95.57 miles (153.81 km) SE | Guernsey Airport (GCI) | Guernsey, Channel Islands, United Kingdom | |
| 9 | 97.39 miles (156.73 km) ESE | Alderney Airport (ACI) | Alderney, Channel Islands, United Kingdom | |
| 10 | 100.35 miles (161.49 km) NE | Bristol Filton Airport (FZO) | Filton, Bristol, United Kingdom | |
| 11 | 102.27 miles (164.60 km) ENE | Bournemouth Airport (BOH) | Bournemouth, England, United Kingdom | |
| 12 | 102.94 miles (165.66 km) WSW | St Mary's Airport (ISC) | St Mary's, Isles of Scilly, United Kingdom | |
| 13 | 103.83 miles (167.10 km) WSW | Tresco Heliport (TSO) | Tresco, Isles of Scilly, United Kingdom | |
| 14 | 104.26 miles (167.79 km) NNW | Haverfordwest Aerodrome (HAW) | Haverfordwest, Wales, United Kingdom | |
| 15 | 118.50 miles (190.71 km) NE | RAF Lyneham (LYE) | Wiltshire, England, United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,030.45 miles (19,361.09 km) SE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 2 | 12,006.20 miles (19,322.05 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 3 | 11,998.81 miles (19,310.16 km) SSE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 4 | 11,992.59 miles (19,300.16 km) SE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 5 | 11,966.88 miles (19,258.78 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 6 | 11,961.06 miles (19,249.41 km) SSE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 7 | 11,947.14 miles (19,227.00 km) SSE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 8 | 11,937.36 miles (19,211.27 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 9 | 11,936.06 miles (19,209.18 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 10 | 11,932.33 miles (19,203.18 km) SSE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 11 | 11,911.75 miles (19,170.06 km) SSE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 12 | 11,903.46 miles (19,156.71 km) SSE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 13 | 11,893.35 miles (19,140.45 km) SE | Milford Sound Airport (MFN) | Milford Sound, New Zealand | |
| 14 | 11,882.15 miles (19,122.42 km) SSE | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| 15 | 11,873.60 miles (19,108.66 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 51.31 miles (82.58 km) SSW | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 2 | 67.05 miles (107.90 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 3 | 69.72 miles (112.21 km) SE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 72.47 miles (116.63 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 5 | 96.56 miles (155.40 km) SE | Mission Field (LVM) | Livingston, Montana, United States | |
| 6 | 97.30 miles (156.59 km) SSW | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 7 | 102.03 miles (164.20 km) WNW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 122.80 miles (197.63 km) ENE | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 9 | 133.72 miles (215.20 km) N | Shelby Airport (SBX) | Shelby, Montana, United States | |
| 10 | 137.25 miles (220.89 km) SW | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 11 | 138.97 miles (223.65 km) SSE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 12 | 139.51 miles (224.52 km) N | Cut Bank Municipal AirportCut Bank Army Air Field (CTB) | Cut Bank, Montana, United States | |
| 13 | 158.54 miles (255.14 km) NW | Glacier Park International Airport (FCA) | Kalispell, Montana, United States | |
| 14 | 163.70 miles (263.45 km) E | Roundup Airport (RPX) | Roundup, Montana, United States | |
| 15 | 169.14 miles (272.20 km) NE | Havre City-County Airport (HVR) | Havre, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,563.08 miles (16,999.59 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,552.15 miles (16,981.99 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,548.64 miles (16,976.36 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 4 | 10,536.59 miles (16,956.96 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,525.82 miles (16,939.62 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,452.26 miles (16,821.24 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,363.52 miles (16,678.43 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,340.10 miles (16,640.74 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,252.07 miles (16,499.06 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,247.66 miles (16,491.97 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,235.05 miles (16,471.68 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,200.52 miles (16,416.11 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,189.58 miles (16,398.51 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,174.40 miles (16,374.07 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,162.80 miles (16,355.40 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |