Nonstop flight route between Alderney, Channel Islands, United Kingdom and Salmon, Idaho, United States:
Departure Airport:
(49°42'24"N by 2°12'51"W)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from ACI to SMN:
4,709.31 miles (7,578.89 km)
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- About this route
- ACI Airport Information
- SMN Airport Information
- Facts about ACI
- Facts about SMN
- Map of Nearest Airports to ACI
- List of Nearest Airports to ACI
- Map of Furthest Airports from ACI
- List of Furthest Airports from ACI
- 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 Alderney Airport (ACI), Alderney, Channel Islands, United Kingdom and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,709 miles (or 7,579 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 Alderney 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 Alderney 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: | ACI / EGJA |
| Airport Name: | Alderney Airport |
| Location: | Alderney, Channel Islands, United Kingdom |
| GPS Coordinates: | 49°42'24"N by 2°12'51"W |
| Area Served: | Alderney |
| Operator/Owner: | States of Guernsey |
| Airport Type: | Public |
| Elevation: | 290 feet (88 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from ACI |
| More Information: | ACI 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 Alderney Airport (ACI):
- The closest airport to Alderney Airport (ACI) is Guernsey Airport (GCI), which is located 26 miles (41 kilometers) SW of ACI.
- Alderney has self manoeuvring stands.
- The furthest airport from Alderney Airport (ACI) is Dunedin International Airport (DUD), which is located 11,999 miles (19,310 kilometers) away in Dunedin, Otago, New Zealand.
- The book documents a previously unpublicised aspect of the island's history, was published by Amberley Publishing in summer 2010.
- Because of Alderney Airport's relatively low elevation of 290 feet, planes can take off or land at Alderney 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.
- The terminal building, erected in 1968, contains an arrivals room and a departure lounge, with a check-in desk for the airport's only scheduled airline, Aurigny Air Services.
- Alderney Airport (ACI) has 3 runways.
Facts about Lemhi County Airport (SMN):
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 25.58 miles (41.17 km) SW | Guernsey Airport (GCI) | Guernsey, Channel Islands, United Kingdom |     |
| 2 | 33.27 miles (53.54 km) E | Cherbourg - Maupertus Airport (CER) | Cherbourg, France | |
| 3 | 34.46 miles (55.46 km) S | Jersey Airport (JER) | Jersey, Channel Islands, United Kingdom | |
| 4 | 75.96 miles (122.24 km) NNE | Bournemouth Airport (BOH) | Bournemouth, England, United Kingdom | |
| 5 | 77.55 miles (124.80 km) S | Dinard–Pleurtuit–Saint-Malo Airport (DNR) | Dinard, France | |
| 6 | 83.03 miles (133.62 km) NE | Bembridge Airport (BBP) | Bembridge, Isle of Wight, United Kingdom | |
| 7 | 85.84 miles (138.15 km) SSW | Saint-Brieuc - Armor Airport (SBK) | Saint-Brieuc, France | |
| 8 | 86.96 miles (139.95 km) SW | Lannion - Côte de Granit Airport (LAI) | Lannion, France | |
| 9 | 87.42 miles (140.68 km) ESE | Caen la Mer Airport (CFR) | Caen, France | |
| 10 | 88.62 miles (142.62 km) NW | Exeter International Airport (EXT) | Exeter, United Kingdom | |
| 11 | 93.88 miles (151.09 km) NNE | Southampton Airport (SOU) | Eastleigh (near Southampton), England, United Kingdom | |
| 12 | 97.39 miles (156.73 km) WNW | Plymouth City Airport (PLH) | Plymouth, United Kingdom | |
| 13 | 102.33 miles (164.68 km) NE | Chichester/Goodwood Airport (QUG) | Chichester, England, United Kingdom | |
| 14 | 103.75 miles (166.97 km) E | Le Havre - Octeville Airport (LEH) | Le Havre, France | |
| 15 | 105.26 miles (169.40 km) SW | Morlaix - Ploujean Airport (MXN) | Morlaix, France | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,998.89 miles (19,310.29 km) ESE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 2 | 11,983.68 miles (19,285.81 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 3 | 11,952.46 miles (19,235.58 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 4 | 11,951.77 miles (19,234.46 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,946.97 miles (19,226.73 km) SW | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 6 | 11,946.23 miles (19,225.54 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 7 | 11,944.17 miles (19,222.23 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 8 | 11,940.37 miles (19,216.11 km) SSE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 9 | 11,936.42 miles (19,209.76 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 10 | 11,908.97 miles (19,165.58 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,904.45 miles (19,158.31 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,897.23 miles (19,146.69 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 13 | 11,895.41 miles (19,143.75 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 14 | 11,889.96 miles (19,134.99 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,869.83 miles (19,102.60 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 | |