Nonstop flight route between Eastleigh (near Southampton), England, United Kingdom and Salmon, Idaho, United States:
Departure Airport:
(50°57'1"N by 1°21'24"W)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from SOU to SMN:
4,675.11 miles (7,523.85 km)
Share this route:
Jump to:
- About this route
- SOU Airport Information
- SMN Airport Information
- Facts about SOU
- Facts about SMN
- Map of Nearest Airports to SOU
- List of Nearest Airports to SOU
- Map of Furthest Airports from SOU
- List of Furthest Airports from SOU
- 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 Southampton Airport (SOU), Eastleigh (near Southampton), England, United Kingdom and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,675 miles (or 7,524 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 Southampton 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 Southampton 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: | SOU / EGHI |
| Airport Name: | Southampton Airport |
| Location: | Eastleigh (near Southampton), England, United Kingdom |
| GPS Coordinates: | 50°57'1"N by 1°21'24"W |
| Area Served: | Southampton |
| Operator/Owner: | Heathrow Airport Holdings |
| Airport Type: | Public |
| Elevation: | 44 feet (13 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SOU |
| More Information: | SOU 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 Southampton Airport (SOU):
- Southampton Airport handled 1,722,758 passengers last year.
- During the 1950s a mainstay of business for the airport was the Cross channel car ferry service operated by Silver City Airways using Bristol Freighters and Superfreighters.
- The closest airport to Southampton Airport (SOU) is Lasham Airfield (QLA), which is located 22 miles (35 kilometers) NE of SOU.
- Southampton Airport (SOU) currently has only 1 runway.
- Because of Southampton Airport's relatively low elevation of 44 feet, planes can take off or land at Southampton 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.
- During the First World War, when forces from the United States Navy arrived in 1917, work on the building of hangars began.
- The furthest airport from Southampton Airport (SOU) is Dunedin International Airport (DUD), which is located 11,918 miles (19,179 kilometers) away in Dunedin, Otago, New Zealand.
- In 1936 Supermarine opened a test flight facility on the site, followed shortly thereafter by the opening of the Cunliffe-Owen Aircraft factory on the southern end of the runway.
Facts about Lemhi County Airport (SMN):
- The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
- 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 furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 21.56 miles (34.69 km) NE | Lasham Airfield (QLA) | Lasham, England, United Kingdom |     |
| 2 | 21.69 miles (34.90 km) SSE | Bembridge Airport (BBP) | Bembridge, Isle of Wight, United Kingdom | |
| 3 | 24.23 miles (39.00 km) WSW | Bournemouth Airport (BOH) | Bournemouth, England, United Kingdom | |
| 4 | 26.60 miles (42.80 km) NE | RAF Odiham (ODH) | Odiham, United Kingdom | |
| 5 | 26.78 miles (43.10 km) ESE | Chichester/Goodwood Airport (QUG) | Chichester, England, United Kingdom | |
| 6 | 33.69 miles (54.23 km) NE | Farnborough Airport (FAB) | Farnborough, United Kingdom | |
| 7 | 33.96 miles (54.66 km) NE | Blackbushe Airport (BBS) | Yateley, Hampshire, England, United Kingdom | |
| 8 | 46.85 miles (75.39 km) E | Shoreham Airport (ESH) | Lancing, West Sussex, United Kingdom | |
| 9 | 47.22 miles (75.99 km) NW | RAF Lyneham (LYE) | Wiltshire, England, United Kingdom | |
| 10 | 47.38 miles (76.26 km) NNE | RAF Benson (BEX) | Benson, Oxfordshire, England, United Kingdom | |
| 11 | 52.47 miles (84.45 km) ENE | Gatwick Airport (LGW) | London, England, United Kingdom | |
| 12 | 53.18 miles (85.59 km) NE | London Heathrow Airport (LHR) | London, England, United Kingdom | |
| 13 | 53.92 miles (86.78 km) NNW | RAF Fairford (FFD) | Fairford, England, United Kingdom | |
| 14 | 55.91 miles (89.97 km) NNE | RAF High Wycombe (HYC) | High Wycombe, Buckinghamshire, England, United Kingdom | |
| 15 | 55.91 miles (89.98 km) ENE | Redhill Aerodrome (KRH) | Redhill, Surrey, England, United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,917.53 miles (19,179.36 km) SE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 2 | 11,895.95 miles (19,144.63 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 3 | 11,893.10 miles (19,140.04 km) SSW | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 4 | 11,883.16 miles (19,124.05 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,871.56 miles (19,105.37 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 6 | 11,862.72 miles (19,091.15 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 7 | 11,854.70 miles (19,078.24 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 8 | 11,854.25 miles (19,077.51 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 9 | 11,847.38 miles (19,066.47 km) SSE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 10 | 11,825.23 miles (19,030.82 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,823.25 miles (19,027.63 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,808.95 miles (19,004.62 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 13 | 11,801.52 miles (18,992.66 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 14 | 11,801.35 miles (18,992.38 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,780.81 miles (18,959.34 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 | |