Nonstop flight route between London, England, United Kingdom and Salmon, Idaho, United States:
Departure Airport:
(51°28'38"N by 0°27'41"W)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from LHR to SMN:
4,676.39 miles (7,525.90 km)
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Jump to:
- About this route
- LHR Airport Information
- SMN Airport Information
- Facts about LHR
- Facts about SMN
- Map of Nearest Airports to LHR
- List of Nearest Airports to LHR
- Map of Furthest Airports from LHR
- List of Furthest Airports from LHR
- Map of Nearest Airports to SMN
- List of Nearest Airports to SMN
- Map of Furthest Airports from SMN
- List of Furthest Airports from SMN
About this route:
A direct, nonstop flight between London Heathrow Airport (LHR), London, England, United Kingdom and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,676 miles (or 7,526 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 London Heathrow Airport and Lemhi 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 London Heathrow Airport and Lemhi 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: | LHR / EGLL |
| Airport Name: | London Heathrow Airport |
| Location: | London, England, United Kingdom |
| GPS Coordinates: | 51°28'38"N by 0°27'41"W |
| Area Served: | London, United Kingdom |
| Operator/Owner: | Heathrow Airport Holdings |
| Airport Type: | Public |
| Elevation: | 83 feet (25 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from LHR |
| More Information: | LHR Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SMN / KSMN |
| Airport Name: | Lemhi County Airport |
| Location: | Salmon, Idaho, United States |
| GPS Coordinates: | 45°7'26"N by 113°52'53"W |
| Operator/Owner: | Lemhi County |
| Airport Type: | Public |
| Elevation: | 4043 feet (1,232 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SMN |
| More Information: | SMN Maps & Info |
Facts about London Heathrow Airport (LHR):
- Heathrow is 14 mi west of central London, near the south end of the London Borough of Hillingdon on a parcel of land that is designated part of the Metropolitan Green Belt.
- The furthest airport from London Heathrow Airport (LHR) is Chatham Islands (CHT), which is located 11,875 miles (19,112 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Of Heathrow's 69 million passengers in 2011, 7% were bound for UK destinations, 41% were short-haul international travellers and 52% were long-haul.
- The closest airport to London Heathrow Airport (LHR) is RAF Northolt (NHT), which is located only 6 miles (9 kilometers) NNE of LHR.
- Because of London Heathrow Airport's relatively low elevation of 83 feet, planes can take off or land at London Heathrow 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.
- Terminal 1 opened in 1968 and was formally inaugurated by Queen Elizabeth II in May 1969.
- London Heathrow Airport (LHR) has 2 runways.
Facts about Lemhi County Airport (SMN):
- The furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.
- Because of Lemhi County Airport's high elevation of 4,043 feet, planes must typically fly at a faster airspeed in order to takeoff or land at SMN. Combined with a high temperature, this could make SMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Lemhi County Airport (SMN) currently has only 1 runway.
- The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 5.54 miles (8.91 km) NNE | RAF Northolt (NHT) | Ruislip, England, United Kingdom |     |
| 2 | 19.52 miles (31.42 km) SW | Farnborough Airport (FAB) | Farnborough, United Kingdom | |
| 3 | 19.74 miles (31.77 km) WSW | Blackbushe Airport (BBS) | Yateley, Hampshire, England, United Kingdom | |
| 4 | 20.30 miles (32.68 km) NW | RAF High Wycombe (HYC) | High Wycombe, Buckinghamshire, England, United Kingdom | |
| 5 | 21.87 miles (35.20 km) NNE | Hatfield Aerodrome (HTF) | Hatfield, Hertfordshire, England, United Kingdom | |
| 6 | 22.31 miles (35.90 km) E | London City Airport (LCY) | London, England, United Kingdom | |
| 7 | 22.95 miles (36.93 km) SE | Redhill Aerodrome (KRH) | Redhill, Surrey, England, United Kingdom | |
| 8 | 23.58 miles (37.94 km) ESE | London Biggin Hill Airport (BQH) | Biggin Hill / London, England, United Kingdom | |
| 9 | 25.60 miles (41.19 km) SSE | Gatwick Airport (LGW) | London, England, United Kingdom | |
| 10 | 26.72 miles (43.01 km) SW | RAF Odiham (ODH) | Odiham, United Kingdom | |
| 11 | 27.73 miles (44.63 km) N | London Luton Airport (LTN) | Luton (near London), England, United Kingdom | |
| 12 | 28.90 miles (46.51 km) WNW | RAF Benson (BEX) | Benson, Oxfordshire, England, United Kingdom | |
| 13 | 31.82 miles (51.21 km) SW | Lasham Airfield (QLA) | Lasham, England, United Kingdom | |
| 14 | 40.91 miles (65.84 km) NNW | Milton Keynes Airport (KYN) | Milton Keynes, England, United Kingdom | |
| 15 | 41.02 miles (66.02 km) NE | London Stansted Airport (STN) | Essex (near London), England, United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,875.41 miles (19,111.57 km) SSW | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,864.53 miles (19,094.06 km) SE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 3 | 11,842.85 miles (19,059.17 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 4 | 11,832.19 miles (19,042.01 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,819.80 miles (19,022.08 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 6 | 11,809.87 miles (19,006.09 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 7 | 11,802.34 miles (18,993.98 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 8 | 11,801.20 miles (18,992.14 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 9 | 11,795.88 miles (18,983.58 km) SSE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 10 | 11,772.10 miles (18,945.31 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,770.30 miles (18,942.41 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,755.89 miles (18,919.22 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 13 | 11,752.08 miles (18,913.09 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 14 | 11,748.32 miles (18,907.04 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,727.83 miles (18,874.07 km) SE | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 44.63 miles (71.83 km) SSW | Challis Airport (CHL) | Challis, Idaho, United States | |
| 2 | 65.34 miles (105.16 km) E | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 3 | 88.21 miles (141.95 km) NE | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 4 | 105.26 miles (169.40 km) SE | Dubois Municipal Airport (DBS) | Dubois, Idaho, United States | |
| 5 | 109.67 miles (176.50 km) W | McCall Municipal Airport (MYL) | McCall, Idaho, United States | |
| 6 | 113.79 miles (183.12 km) S | Friedman Memorial Airport (SUN) | Hailey, Idaho, United States | |
| 7 | 124.26 miles (199.97 km) N | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 137.25 miles (220.89 km) NE | Helena Regional Airport (HLN) | Helena, Montana, United States | |
| 9 | 138.54 miles (222.96 km) ESE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 10 | 139.78 miles (224.96 km) ENE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 11 | 142.78 miles (229.79 km) SE | Idaho Falls Regional Airport (IDA) | Idaho Falls, Idaho, United States | |
| 12 | 158.08 miles (254.41 km) SW | Boise Airport (BOI) | Boise, Idaho, United States | |
| 13 | 165.78 miles (266.79 km) SSE | Pocatello Regional Airport (PIH) | Pocatello, Idaho, United States | |
| 14 | 171.20 miles (275.52 km) ENE | Mission Field (LVM) | Livingston, Montana, United States | |
| 15 | 171.98 miles (276.77 km) WSW | Ontario Municipal Airport (ONO) | Ontario, Oregon, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,685.72 miles (17,196.96 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,683.63 miles (17,193.59 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,677.06 miles (17,183.01 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 4 | 10,664.05 miles (17,162.08 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,656.97 miles (17,150.68 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,588.72 miles (17,040.86 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,500.49 miles (16,898.86 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,477.32 miles (16,861.57 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,388.70 miles (16,718.95 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,384.71 miles (16,712.53 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,371.80 miles (16,691.75 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,336.41 miles (16,634.79 km) SSE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,326.44 miles (16,618.75 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,311.65 miles (16,594.95 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,289.81 miles (16,559.81 km) SE | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |