Nonstop flight route between Salmon, Idaho, United States and Attu Island, Alaska, United States:
Departure Airport:
(45°7'26"N by 113°52'53"W)
Arrival Airport:
(52°49'57"N by 173°10'32"E)
Distance from SMN to ATU:
3,205.35 miles (5,158.49 km)
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Jump to:
- About this route
- SMN Airport Information
- ATU Airport Information
- Facts about SMN
- Facts about ATU
- Map of Nearest Airports to SMN
- List of Nearest Airports to SMN
- Map of Furthest Airports from SMN
- List of Furthest Airports from SMN
- Map of Nearest Airports to ATU
- List of Nearest Airports to ATU
- Map of Furthest Airports from ATU
- List of Furthest Airports from ATU
About this route:
A direct, nonstop flight between Lemhi County Airport (SMN), Salmon, Idaho, United States and Casco Cove Coast Guard Station (ATU), Attu Island, Alaska, United States would travel a Great Circle distance of 3,205 miles (or 5,158 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 Lemhi County Airport and Casco Cove Coast Guard Station, 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 Lemhi County Airport and Casco Cove Coast Guard Station. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
| IATA / ICAO Codes: | ATU / PAAT |
| Airport Names: |
|
| Location: | Attu Island, Alaska, United States |
| GPS Coordinates: | 52°49'57"N by 173°10'32"E |
| Operator/Owner: | U.S. Coast Guard 17th Dist. |
| Airport Type: | Private use |
| Elevation: | 88 feet (27 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from ATU |
| More Information: | ATU Maps & Info |
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.
- 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.
Facts about Casco Cove Coast Guard Station (ATU):
- Because of Casco Cove Coast Guard Station's relatively low elevation of 88 feet, planes can take off or land at Casco Cove Coast Guard Station 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 Casco Cove Airport was a LORAN navigation station operated by the United States Coast Guard.
- The island is protected as part of the National Parks Trust territory and few people visit the island or area, as it is restricted.
- In addition to being known as "Casco Cove Coast Guard Station", other names for ATU include "LORAN Station Attu" and "(former Naval Air Facility Attu)".
- The furthest airport from Casco Cove Coast Guard Station (ATU) is Cape Town International Airport (CPT), which is located 10,631 miles (17,109 kilometers) away in Cape Town, South Africa.
- The closest airport to Casco Cove Coast Guard Station (ATU) is Eareckson Air Station (SYA), which is located 40 miles (65 kilometers) ESE of ATU.
- Casco Cove Coast Guard Station (ATU) currently has only 1 runway.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 40.08 miles (64.50 km) ESE | Eareckson Air Station (SYA) | Shemya, Alaska, United States | |
| 2 | 434.18 miles (698.74 km) E | Adak Airport (ADK) | Adak Island, Alaska, United States | |
| 3 | 531.42 miles (855.23 km) E | Atka Airport (AKB) | Atka, Alaska, United States | |
| 4 | 611.52 miles (984.14 km) W | Yelizovo Airport (PKC) | Petropavlovsk-Kamchatsky, Russia | |
| 5 | 720.55 miles (1,159.60 km) ENE | St. Paul Island Airport (SNP) | St. Paul Island, Alaska, United States | |
| 6 | 729.92 miles (1,174.68 km) ENE | St. George Airport (STG) | St. George, Alaska, United States | |
| 7 | 747.48 miles (1,202.95 km) E | Nikolski Air Station (IKO) | Nikolski, Alaska, United States | |
| 8 | 823.34 miles (1,325.04 km) N | Markovo Airport (KVM) | Markovo, Chukotka Autonomous Okrug, Russia | |
| 9 | 836.44 miles (1,346.12 km) ENE | Unalaska Airport (DUT) | Unalaska, Alaska, United States | |
| 10 | 837.95 miles (1,348.54 km) N | Ugolny Airport (DYR) | Anadyr, Russia | |
| 11 | 866.70 miles (1,394.82 km) ENE | Akutan Seaplane Base (KQA) | Akutan, Alaska, United States | |
| 12 | 928.25 miles (1,493.87 km) NNE | Gambell Airport (GAM) | Gambell, Alaska, United States | |
| 13 | 931.23 miles (1,498.67 km) NNE | Provideniya Bay Airport (PVS) | Provideniya, Chukotka, Russia | |
| 14 | 933.22 miles (1,501.86 km) NE | Mekoryuk Airport (MYU) | Mekoryuk, Alaska, United States | |
| 15 | 950.66 miles (1,529.94 km) NNE | Savoonga Airport (SVA) | Savoonga, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,631.23 miles (17,109.27 km) SW | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,501.26 miles (16,900.10 km) WSW | George Airport (GRJ) | George, South Africa | |
| 3 | 10,458.69 miles (16,831.59 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |
| 4 | 10,431.40 miles (16,787.68 km) SW | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 5 | 10,381.55 miles (16,707.44 km) WSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 6 | 10,381.37 miles (16,707.15 km) SW | Alexander Bay Airport (ALJ) | Alexander Bay, South Africa | |
| 7 | 10,354.51 miles (16,663.93 km) SW | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 8 | 10,354.51 miles (16,663.92 km) SW | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 9 | 10,326.08 miles (16,618.18 km) ESE | Port Stanley Airport (PSY) | Stanley, Falkland Islands, United Kingdom | |
| 10 | 10,311.35 miles (16,594.46 km) WSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 11 | 10,303.30 miles (16,581.51 km) ESE | RAF Mount Pleasant (MPN) | Falkland Islands | |
| 12 | 10,302.39 miles (16,580.04 km) SW | Lüderitz Airport (LUD) | Luderitz, Namibia | |
| 13 | 10,282.92 miles (16,548.71 km) SW | Karasburg Airport (KAS) | Karasburg, Namibia | |
| 14 | 10,248.62 miles (16,493.52 km) WSW | East London Airport (ELS) | East London, South Africa | |
| 15 | 10,224.59 miles (16,454.85 km) SW | Upington Airport (UTN) | Upington, South Africa | |