Nonstop flight route between San Diego / El Cajon, California, United States and Salmon, Idaho, United States:
Departure Airport:

Arrival Airport:

Distance from SEE to SMN:
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- About this route
- SEE Airport Information
- SMN Airport Information
- Facts about SEE
- Facts about SMN
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- List of Nearest Airports to SEE
- Map of Furthest Airports from SEE
- List of Furthest Airports from SEE
- Map of Nearest Airports to SMN
- List of Nearest Airports to SMN
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About this route:
A direct, nonstop flight between Gillespie Field (SEE), San Diego / El Cajon, California, United States and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 866 miles (or 1,393 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 Gillespie Field and Lemhi County Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | SEE / KSEE |
Airport Name: | Gillespie Field |
Location: | San Diego / El Cajon, California, United States |
GPS Coordinates: | 32°49'33"N by 116°58'20"W |
Area Served: | San Diego, California |
Operator/Owner: | County of San Diego |
Airport Type: | Public |
Elevation: | 388 feet (118 meters) |
# of Runways: | 3 |
View all routes: | Routes from SEE |
More Information: | SEE 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 Gillespie Field (SEE):
- The closest airport to Gillespie Field (SEE) is Montgomery Field (MYF), which is located only 10 miles (16 kilometers) W of SEE.
- Because of Gillespie Field's relatively low elevation of 388 feet, planes can take off or land at Gillespie Field 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.
- In 1946 the airfield was turned over to San Diego County and became a general aviation facility.
- Gillespie Field is a county-owned public airport 10 miles northeast of downtown San Diego, in El Cajon, San Diego County, California.
- The furthest airport from Gillespie Field (SEE) is Sir Gaëtan Duval Airport (RRG), which is located 11,534 miles (18,562 kilometers) away in Rodrigues Island, Mauritius.
- In February 1944, the camp was commissioned as Marine Corps Auxiliary Airfield Gillespie under the command of Marine Corps Air Station El Toro.
- Gillespie Field (SEE) has 3 runways.
- Gillespie is the home of the restoration facility Gillespie Field Annex for the San Diego Air and Space Museum.
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.
- Lemhi County Airport (SMN) currently has only 1 runway.
- 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.