Nonstop flight route between Boise, Idaho, United States and Sion, Switzerland:
Departure Airport:

Arrival Airport:

Distance from BOI to SIR:
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- About this route
- BOI Airport Information
- SIR Airport Information
- Facts about BOI
- Facts about SIR
- Map of Nearest Airports to BOI
- List of Nearest Airports to BOI
- Map of Furthest Airports from BOI
- List of Furthest Airports from BOI
- Map of Nearest Airports to SIR
- List of Nearest Airports to SIR
- Map of Furthest Airports from SIR
- List of Furthest Airports from SIR
About this route:
A direct, nonstop flight between Boise Airport (BOI), Boise, Idaho, United States and Sion Airport (SIR), Sion, Switzerland would travel a Great Circle distance of 5,338 miles (or 8,591 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 Boise Airport and Sion 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 Boise Airport and Sion Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | BOI / KBOI |
Airport Names: |
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Location: | Boise, Idaho, United States |
GPS Coordinates: | 43°33'51"N by 116°13'22"W |
Area Served: | Boise, Idaho |
Airport Type: | Public |
Elevation: | 2871 feet (875 meters) |
# of Runways: | 3 |
View all routes: | Routes from BOI |
More Information: | BOI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SIR / LSGS |
Airport Names: |
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Location: | Sion, Switzerland |
GPS Coordinates: | 46°13'10"N by 7°19'36"E |
Area Served: | Sion, Switzerland |
Elevation: | 1585 feet (483 meters) |
# of Runways: | 2 |
View all routes: | Routes from SIR |
More Information: | SIR Maps & Info |
Facts about Boise Airport (BOI):
- The closest airport to Boise Airport (BOI) is Mountain Home Air Force Base (MUO), which is located 40 miles (64 kilometers) SSE of BOI.
- Boise Airport (BOI) has 3 runways.
- In addition to being known as "Boise Airport", other names for BOI include "Boise Air Terminal" and "Gowen Field".
- Gowen Field Air National Guard Base primarily refers to the military facilities on the south side of the runways, which includes Air National Guard, Army National Guard, and reserve units of the Army, Navy, and Marine Corps.
- The furthest airport from Boise Airport (BOI) is Tôlanaro Airport (FTU), which is located 10,843 miles (17,451 kilometers) away in Tôlanaro, Madagascar.
- The tower and TRACON opened September 16, 2013 and features updated electronics and equipment, including the STARS radar system.
- During World War II the Army Air Corps, later Army Air Forces, leased the field for use a training base for B-17 Flying Fortress and B-24 Liberator bomber crews.
Facts about Sion Airport (SIR):
- The closest airport to Sion Airport (SIR) is Aosta Valley Airport (AOT), which is located 33 miles (54 kilometers) S of SIR.
- The furthest airport from Sion Airport (SIR) is Chatham Islands (CHT), which is nearly antipodal to Sion Airport (meaning Sion Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,188 miles (19,615 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- In addition to being known as "Sion Airport", other names for SIR include "Aéroport de Sion" and "LSGS /LSMS".
- Sion Airport (SIR) has 2 runways.