Nonstop flight route between Knock, Ireland and Salmon, Idaho, United States:
Departure Airport:
(53°54'37"N by 8°49'6"W)
Arrival Airport:
(45°7'26"N by 113°52'53"W)
Distance from NOC to SMN:
4,305.45 miles (6,928.93 km)
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Jump to:
- About this route
- NOC Airport Information
- SMN Airport Information
- Facts about NOC
- Facts about SMN
- Map of Nearest Airports to NOC
- List of Nearest Airports to NOC
- Map of Furthest Airports from NOC
- List of Furthest Airports from NOC
- 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 Ireland West Airport Knock (NOC), Knock, Ireland and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,305 miles (or 6,929 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 Ireland West Airport Knock 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 Ireland West Airport Knock 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: | NOC / EIKN |
| Airport Names: |
|
| Location: | Knock, Ireland |
| GPS Coordinates: | 53°54'37"N by 8°49'6"W |
| Area Served: | Connacht, Ireland |
| Airport Type: | Public |
| Elevation: | 665 feet (203 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from NOC |
| More Information: | NOC 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 Ireland West Airport Knock (NOC):
- Ireland West Airport Knock handled 665,000 passengers last year.
- Ireland West Airport Knock (NOC) currently has only 1 runway.
- The airport is on the main N17 north – south road, halfway between Galway and Sligo, close to the junction with the N5 east – west Westport – Castlebar – Longford road.
- The furthest airport from Ireland West Airport Knock (NOC) is Ryan's Creek Aerodrome (SZS), which is located 11,934 miles (19,206 kilometers) away in Stewart Island, New Zealand.
- During September 2011 Ryanair celebrated its 4 millionth passenger through the airport, while Lufthansa announced it would be commencing weekly flights to Düsseldorf in May 2012.
- The closest airport to Ireland West Airport Knock (NOC) is Sligo Airport (SXL), which is located 27 miles (44 kilometers) NNE of NOC.
- In 2008 a record 629,000 passengers used the airport, a 13% rise compared to the previous year.
- In addition to being known as "Ireland West Airport Knock", other names for NOC include "Horan International Airport" and "Aerfort Iarthar Éireann".
- Because of Ireland West Airport Knock's relatively low elevation of 665 feet, planes can take off or land at Ireland West Airport Knock 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.
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.
- 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.
- 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 | 27.07 miles (43.56 km) NNE | Sligo Airport (SXL) | Strandhill (near Sligo), Ireland |     |
| 2 | 42.45 miles (68.31 km) S | Galway Airport (GWY) | Galway, Ireland | |
| 3 | 53.68 miles (86.40 km) WNW | Belmullet Aerodrome (BLY) | Belmullet, Ireland | |
| 4 | 53.99 miles (86.89 km) SSW | Connemara Airport (NNR) | Inverin, Ireland | |
| 5 | 58.02 miles (93.38 km) NE | Enniskillen/St Angelo Airport (ENK) | Enniskillen, Co Fermanagh, Northern Ireland, United Kingdom | |
| 6 | 64.42 miles (103.68 km) SSW | Inishmaan Aerodrome (IIA) | Inishmaan, Ireland | |
| 7 | 65.01 miles (104.62 km) SSW | Inisheer Aerodrome (INQ) | Inisheer, Ireland | |
| 8 | 65.26 miles (105.02 km) SSW | Inishmore Aerodrome (IOR) | Kilronan, Inishmore, Ireland | |
| 9 | 80.65 miles (129.80 km) NNE | Donegal Airport (CFN) | Carrickfinn, Ireland | |
| 10 | 83.60 miles (134.55 km) S | Shannon Airport (SNN) | Shannon (County Clare), Ireland | |
| 11 | 102.69 miles (165.26 km) NE | City of Derry Airport (LDY) | Derry, Northern Ireland, United Kingdom | |
| 12 | 107.36 miles (172.79 km) SE | Kilkenny Airport (KKY) | Kilkenny, Ireland | |
| 13 | 109.66 miles (176.48 km) ESE | Dublin Airport (DUB) | Dublin, Ireland | |
| 14 | 116.98 miles (188.26 km) ENE | Belfast International Airport (BFS) | Belfast, Northern Ireland, United Kingdom | |
| 15 | 123.03 miles (198.00 km) SSW | Kerry Airport (KIR) | Tralee, County Kerry, Ireland | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,933.91 miles (19,205.72 km) SSE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 2 | 11,903.52 miles (19,156.80 km) SSE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 3 | 11,883.56 miles (19,124.69 km) S | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 4 | 11,830.40 miles (19,039.13 km) S | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 5 | 11,819.07 miles (19,020.90 km) S | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 6 | 11,813.00 miles (19,011.14 km) S | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 7 | 11,796.09 miles (18,983.92 km) S | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 8 | 11,782.10 miles (18,961.40 km) SSE | Milford Sound Airport (MFN) | Milford Sound, New Zealand | |
| 9 | 11,772.98 miles (18,946.73 km) S | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 10 | 11,744.83 miles (18,901.42 km) S | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 11 | 11,743.98 miles (18,900.06 km) S | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 12 | 11,734.36 miles (18,884.58 km) S | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 13 | 11,714.19 miles (18,852.12 km) S | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 14 | 11,712.98 miles (18,850.17 km) S | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| 15 | 11,663.13 miles (18,769.94 km) S | Hokitika Airport (HKK) | Hokitika, 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 | |