Nonstop flight route between Southend, Essex (near London) United Kingdom and Salmon, Idaho, United States:
Departure Airport:
(51°34'13"N by 0°41'35"E)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from SEN to SMN:
4,706.32 miles (7,574.07 km)
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Jump to:
- About this route
- SEN Airport Information
- SMN Airport Information
- Facts about SEN
- Facts about SMN
- Map of Nearest Airports to SEN
- List of Nearest Airports to SEN
- Map of Furthest Airports from SEN
- List of Furthest Airports from SEN
- 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 Southend Airport (SEN), Southend, Essex (near London) United Kingdom and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,706 miles (or 7,574 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 Southend 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 Southend 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: | SEN / EGMC |
| Airport Name: | London Southend Airport |
| Location: | Southend, Essex (near London) United Kingdom |
| GPS Coordinates: | 51°34'13"N by 0°41'35"E |
| Area Served: | Southend, Essex and east London areas |
| Operator/Owner: | Stobart Group |
| Airport Type: | Public |
| Elevation: | 55 feet (17 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SEN |
| More Information: | SEN 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 Southend Airport (SEN):
- London Southend Airport (SEN) currently has only 1 runway.
- The closest airport to London Southend Airport (SEN) is Rochester Airport (RCS), which is located only 17 miles (28 kilometers) SSW of SEN.
- The airport provides RFF Cat 6 between 06:00 – 00:00, RFF Cat 1 between 00:00 – 06:00.
- London Southend Airport handled 969,912 passengers last year.
- Because of London Southend Airport's relatively low elevation of 55 feet, planes can take off or land at London Southend 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.
- Southend Airport has an excellent weather record and is used by airlines as a diversion alternative when adverse weather or incidents close other London airports.
- National Commuter Airways operated passenger services during the 1980s, to Brussels and Jersey from Southend.
- However in 1939, the Air Ministry requisitioned the airfield and it was known as RAF Rochford during World War II.
- A four-star Holiday Inn hotel located adjacent to the airport entrance opened on 1 October 2012.
- The furthest airport from London Southend Airport (SEN) is Chatham Islands (CHT), which is located 11,885 miles (19,126 kilometers) away in Waitangi, Chatham Islands, New Zealand.
Facts about Lemhi County Airport (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.
- The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of 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.
- Lemhi County Airport (SMN) currently has only 1 runway.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 17.17 miles (27.64 km) SSW | Rochester Airport (RCS) | Rochester, Kent, England, United Kingdom |     |
| 2 | 27.79 miles (44.72 km) W | London City Airport (LCY) | London, England, United Kingdom | |
| 3 | 29.02 miles (46.70 km) NNW | MDPGA Wethersfield (WXF) | Braintree, England, United Kingdom | |
| 4 | 29.28 miles (47.13 km) NW | London Stansted Airport (STN) | Essex (near London), England, United Kingdom | |
| 5 | 32.22 miles (51.85 km) ESE | Manston Airport (MSE) | Manston, Kent, England, United Kingdom | |
| 6 | 32.91 miles (52.97 km) WSW | London Biggin Hill Airport (BQH) | Biggin Hill / London, England, United Kingdom | |
| 7 | 36.45 miles (58.66 km) SSE | Lympne Airport (LYM) | Lympne, Kent, England, United Kingdom | |
| 8 | 38.36 miles (61.73 km) NE | Ipswich Airport (IPW) | Ipswich, England | |
| 9 | 42.66 miles (68.65 km) WNW | Hatfield Aerodrome (HTF) | Hatfield, Hertfordshire, England, United Kingdom | |
| 10 | 43.22 miles (69.56 km) NNW | Duxford Aerodrome (QFO) | Duxford, England, United Kingdom | |
| 11 | 43.52 miles (70.03 km) SW | Redhill Aerodrome (KRH) | Redhill, Surrey, England, United Kingdom | |
| 12 | 43.75 miles (70.40 km) SSE | Lydd International Airport (LYX) | Lydd, England, United Kingdom | |
| 13 | 47.76 miles (76.87 km) W | RAF Northolt (NHT) | Ruislip, England, United Kingdom | |
| 14 | 48.00 miles (77.25 km) SW | Gatwick Airport (LGW) | London, England, United Kingdom | |
| 15 | 49.11 miles (79.04 km) NNW | Cambridge International Airport (CBG) | Cambridge, England, United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,884.59 miles (19,126.35 km) SSW | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,820.92 miles (19,023.88 km) SE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 3 | 11,802.70 miles (18,994.56 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 4 | 11,784.72 miles (18,965.63 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,773.24 miles (18,947.14 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 6 | 11,771.39 miles (18,944.16 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 7 | 11,765.86 miles (18,935.27 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 8 | 11,761.92 miles (18,928.93 km) SE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 9 | 11,757.87 miles (18,922.41 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 10 | 11,729.49 miles (18,876.74 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,726.50 miles (18,871.93 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,722.80 miles (18,865.97 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 13 | 11,716.15 miles (18,855.27 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 14 | 11,708.85 miles (18,843.52 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,688.71 miles (18,811.11 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 | |