Nonstop flight route between Boise, Idaho, United States and Georgetown, Ascension Island, Saint Helena:
Departure Airport:

Arrival Airport:

Distance from BOI to ASI:
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- About this route
- BOI Airport Information
- ASI Airport Information
- Facts about BOI
- Facts about ASI
- 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 ASI
- List of Nearest Airports to ASI
- Map of Furthest Airports from ASI
- List of Furthest Airports from ASI
About this route:
A direct, nonstop flight between Boise Airport (BOI), Boise, Idaho, United States and RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena would travel a Great Circle distance of 7,189 miles (or 11,569 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 RAF Ascension, 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 RAF Ascension. 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: | ASI / FHAW |
Airport Names: |
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Location: | Georgetown, Ascension Island, Saint Helena |
GPS Coordinates: | 7°58'9"S by 14°23'38"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from ASI |
More Information: | ASI Maps & Info |
Facts about Boise Airport (BOI):
- The furthest airport from Boise Airport (BOI) is Tôlanaro Airport (FTU), which is located 10,843 miles (17,451 kilometers) away in Tôlanaro, Madagascar.
- 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.
- The closest airport to Boise Airport (BOI) is Mountain Home Air Force Base (MUO), which is located 40 miles (64 kilometers) SSE of BOI.
- Law enforcement at the airport is handled by the Boise Police Department.
- In addition to being known as "Boise Airport", other names for BOI include "Boise Air Terminal" and "Gowen Field".
- Boise Airport covers an area of 5,000 acres at an elevation of 2,871 feet above mean sea level.
- Boise Airport (BOI) has 3 runways.
- The current airport has its origins in 1936 when Boise began buying and leasing land for the airport.
Facts about RAF Ascension (ASI):
- In 1939 Ascension became important as a HF/DF radio station covering trade routes.
- The station comes under the overall jurisdiction of the Commander British Forces South Atlantic Islands, an officer of one-star rank.
- The furthest airport from RAF Ascension (ASI) is Ujae Airport (UJE), which is nearly antipodal to RAF Ascension (meaning RAF Ascension is almost on the exact opposite side of the Earth from Ujae Airport), and is located 12,370 miles (19,907 kilometers) away in Ujae Atoll, Marshall Islands.
- The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".