Nonstop flight route between Salmon, Idaho, United States and Atar, Mauritania:
Departure Airport:

Arrival Airport:

Distance from SMN to ATR:
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- About this route
- SMN Airport Information
- ATR Airport Information
- Facts about SMN
- Facts about ATR
- 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 ATR
- List of Nearest Airports to ATR
- Map of Furthest Airports from ATR
- List of Furthest Airports from ATR
About this route:
A direct, nonstop flight between Lemhi County Airport (SMN), Salmon, Idaho, United States and Atar Airport (ATR), Atar, Mauritania would travel a Great Circle distance of 5,726 miles (or 9,216 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 Atar 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 Lemhi County Airport and Atar Airport. 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: | ATR / GQPA |
Airport Name: | Atar Airport |
Location: | Atar, Mauritania |
GPS Coordinates: | 20°30'24"N by 13°2'35"W |
Operator/Owner: | Government |
Airport Type: | Public |
Elevation: | 758 feet (231 meters) |
# of Runways: | 1 |
View all routes: | Routes from ATR |
More Information: | ATR Maps & Info |
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 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.
- Lemhi County Airport (SMN) currently has only 1 runway.
Facts about Atar Airport (ATR):
- The closest airport to Atar Airport (ATR) is Akjoujt Airport (AJJ), which is located 102 miles (164 kilometers) WSW of ATR.
- The furthest airport from Atar Airport (ATR) is Maré Airport (MEE), which is nearly antipodal to Atar Airport (meaning Atar Airport is almost on the exact opposite side of the Earth from Maré Airport), and is located 12,340 miles (19,859 kilometers) away in Maré, Loyalty Islands, New Caledonia.
- Atar Airport (ATR) currently has only 1 runway.
- Because of Atar Airport's relatively low elevation of 758 feet, planes can take off or land at Atar 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.