Nonstop flight route between Georgetown, Ascension Island, Saint Helena and Chiayi, Taiwan:
Departure Airport:

Arrival Airport:

Distance from ASI to CYI:
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- About this route
- ASI Airport Information
- CYI Airport Information
- Facts about ASI
- Facts about CYI
- Map of Nearest Airports to ASI
- List of Nearest Airports to ASI
- Map of Furthest Airports from ASI
- List of Furthest Airports from ASI
- Map of Nearest Airports to CYI
- List of Nearest Airports to CYI
- Map of Furthest Airports from CYI
- List of Furthest Airports from CYI
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Chiayi Airport (Shueishang Airport) (CYI), Chiayi, Taiwan would travel a Great Circle distance of 9,262 miles (or 14,905 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 RAF Ascension and Chiayi Airport (Shueishang 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 RAF Ascension and Chiayi Airport (Shueishang Airport). You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | CYI / RCKU |
Airport Names: |
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Location: | Chiayi, Taiwan |
GPS Coordinates: | 23°27'15"N by 120°23'50"E |
Operator/Owner: | Civil Aeronautics Administration Ministry of National Defense |
Airport Type: | Public |
Elevation: | 82 feet (25 meters) |
# of Runways: | 2 |
View all routes: | Routes from CYI |
More Information: | CYI Maps & Info |
Facts about RAF Ascension (ASI):
- In 1939 Ascension became important as a HF/DF radio station covering trade routes.
- The NASA Tracking Station at Devil's Ashpit and the Cable & Wireless Earth Station at Donkey Plain were built in the "mid-sixties" for space operations and communications, including the latter's use for transmitting "microwave borne data via the Early Bird Satellite back to the NASA facility at Andover, Maine.
- 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.
- The RAF presence on Ascension is backed up by United States Air Force personnel, who contribute a similar number of service personnel to ensure the effective running of the station, under the command of Captain Eduard Rodriguez, who is responsible to the RAF Station Commander.
- The station comes under the overall jurisdiction of the Commander British Forces South Atlantic Islands, an officer of one-star rank.
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
Facts about Chiayi Airport (Shueishang Airport) (CYI):
- The furthest airport from Chiayi Airport (Shueishang Airport) (CYI) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Chiayi Airport (Shueishang Airport) (meaning Chiayi Airport (Shueishang Airport) is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,320 miles (19,827 kilometers) away in Mariscal Estigarribia, Paraguay.
- Chiayi Airport (Shueishang Airport) (CYI) has 2 runways.
- The closest airport to Chiayi Airport (Shueishang Airport) (CYI) is Tainan Airport (TNN), which is located 37 miles (59 kilometers) SSW of CYI.
- In addition to being known as "Chiayi Airport (Shueishang Airport)", other names for CYI include "嘉義航空站水上機場" and "Jiāyì HángkōngzhànShuǐshàng Jīchǎng".
- The airport was opened on 1 January 1978.
- Because of Chiayi Airport (Shueishang Airport)'s relatively low elevation of 82 feet, planes can take off or land at Chiayi Airport (Shueishang 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.