Nonstop flight route between Salmon, Idaho, United States and Casper, Wyoming, United States:
Departure Airport:
(45°7'26"N by 113°52'53"W)
Arrival Airport:
(42°54'29"N by 106°27'51"W)
Distance from SMN to CPR:
398.88 miles (641.93 km)
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Jump to:
- About this route
- SMN Airport Information
- CPR Airport Information
- Facts about SMN
- Facts about CPR
- 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 CPR
- List of Nearest Airports to CPR
- Map of Furthest Airports from CPR
- List of Furthest Airports from CPR
About this route:
A direct, nonstop flight between Lemhi County Airport (SMN), Salmon, Idaho, United States and Casper–Natrona County International AirportCasper Army Airfield (CPR), Casper, Wyoming, United States would travel a Great Circle distance of 399 miles (or 642 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 relatively short distance between Lemhi County Airport and Casper–Natrona County International AirportCasper Army Airfield, the route shown on this map most likely still appears to be a straight line.
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: | CPR / KCPR |
| Airport Name: | Casper–Natrona County International AirportCasper Army Airfield |
| Location: | Casper, Wyoming, United States |
| GPS Coordinates: | 42°54'29"N by 106°27'51"W |
| Area Served: | Casper, Wyoming |
| Operator/Owner: | Airport Board of Trustees |
| Airport Type: | Public |
| Elevation: | 5350 feet (1,631 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from CPR |
| More Information: | CPR Maps & Info |
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.
- 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 furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.
Facts about Casper–Natrona County International AirportCasper Army Airfield (CPR):
- Because of Casper–Natrona County International AirportCasper Army Airfield's high elevation of 5,350 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CPR. Combined with a high temperature, this could make CPR a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Casper–Natrona County International AirportCasper Army Airfield (CPR) is Sir Gaëtan Duval Airport (RRG), which is located 10,731 miles (17,270 kilometers) away in Rodrigues Island, Mauritius.
- The airport started as the Casper Army Airfield in September 1942, consisting of four asphalt hard surfaced runways - N/S, NE/SW, E/W, NW/SE - varying in length between 8900' and 8600'.
- Casper–Natrona County International AirportCasper Army Airfield (CPR) has 2 runways.
- Casper–Natrona County International Airport is 7 miles northwest of Casper, in Natrona County, Wyoming.
- The closest airport to Casper–Natrona County International AirportCasper Army Airfield (CPR) is Converse County Airport (DGW), which is located 55 miles (89 kilometers) E of CPR.
- Near the airport is the NCIA Business Park, which houses over 35 business ranging from manufacturing to aviation.
| 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 | 55.17 miles (88.78 km) E | Converse County Airport (DGW) | Douglas, Wyoming, United States | |
| 2 | 84.93 miles (136.68 km) SSW | Rawlins Municipal Airport (RWL) | Rawlins, Wyoming, United States | |
| 3 | 101.42 miles (163.22 km) W | Riverton Regional Airport (RIW) | Riverton, Wyoming, United States | |
| 4 | 102.77 miles (165.38 km) S | Shively Field (SAA) | Saratoga, Wyoming, United States | |
| 5 | 104.26 miles (167.78 km) NW | Worland Municipal Airport (WRL) | Worland, Wyoming, United States | |
| 6 | 109.77 miles (176.66 km) NNE | Gillette–Campbell County Airport (GCC) | Gillette, Wyoming, United States | |
| 7 | 114.83 miles (184.80 km) W | Hunt Field (LND) | Lander, Wyoming, United States | |
| 8 | 117.47 miles (189.05 km) SSE | Laramie Regional Airport (LAR) | Laramie, Wyoming, United States | |
| 9 | 131.13 miles (211.04 km) N | Sheridan County Airport (SHR) | Sheridan, Wyoming, United States | |
| 10 | 131.41 miles (211.49 km) ESE | Torrington Municipal Airport (TOR) | Torrington, Wyoming, United States | |
| 11 | 147.52 miles (237.41 km) SE | Francis E. Warren Air Force Base (FEW) | Cheyenne, Wyoming, United States | |
| 12 | 147.86 miles (237.96 km) SE | Cheyenne Regional Airport (CYS) | Cheyenne, Wyoming, United States | |
| 13 | 161.03 miles (259.15 km) WSW | Rock Springs–Sweetwater County Airport (RKS) | Rock Springs, Wyoming, United States | |
| 14 | 162.89 miles (262.15 km) ESE | Western Nebraska Regional Airport (BFF) | Scottsbluff, Nebraska, United States | |
| 15 | 166.56 miles (268.06 km) S | Steamboat Springs Airport (SBS) | Steamboat Springs, Colorado, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,731.39 miles (17,270.45 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,632.51 miles (17,111.33 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,615.87 miles (17,084.54 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,593.17 miles (17,048.00 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,491.01 miles (16,883.61 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,376.52 miles (16,699.35 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,349.72 miles (16,656.22 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,312.18 miles (16,595.81 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,217.20 miles (16,442.94 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 10,193.63 miles (16,405.02 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,183.65 miles (16,388.96 km) ESE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 12 | 10,183.09 miles (16,388.05 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 13 | 10,174.22 miles (16,373.78 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 14 | 10,170.19 miles (16,367.30 km) ESE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 15 | 10,143.65 miles (16,324.58 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |