Nonstop flight route between Georgetown, Ascension Island, Saint Helena and Tainan City, Taiwan, Republic of China:
Departure Airport:

Arrival Airport:

Distance from ASI to TNN:
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- About this route
- ASI Airport Information
- TNN Airport Information
- Facts about ASI
- Facts about TNN
- 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 TNN
- List of Nearest Airports to TNN
- Map of Furthest Airports from TNN
- List of Furthest Airports from TNN
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Tainan Airport (TNN), Tainan City, Taiwan, Republic of China would travel a Great Circle distance of 9,257 miles (or 14,898 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 Tainan 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 Tainan 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: |
|
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: | TNN / RCNN |
Airport Names: |
|
Location: | Tainan City, Taiwan, Republic of China |
GPS Coordinates: | 22°57'1"N by 120°12'20"E |
Operator/Owner: | Civil Aeronautics Administration |
Airport Type: | Public |
Elevation: | 63 feet (19 meters) |
# of Runways: | 2 |
View all routes: | Routes from TNN |
More Information: | TNN Maps & Info |
Facts about RAF Ascension (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 closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
- Wideawake Airfield was a US installation built in 1943 by arrangement with the British government.
- Ascension Island Auxiliary Field was being built by 181 men from Saint Helena by 1957
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
- 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.
Facts about Tainan Airport (TNN):
- In addition to being known as "Tainan Airport", other names for TNN include "臺南航空站台南機場" and "Táinán HángkōngzhànTáinán Jīchǎng".
- Tainan Airport (TNN) has 2 runways.
- The closest airport to Tainan Airport (TNN) is Kaohsiung International Airport (Kaohsiung Siaogang Airport) (KHH), which is located 27 miles (44 kilometers) SSE of TNN.
- International flights began on 18 July 2013 to Hong Kong, with a 3 times weekly service by China Airlines using Boeing 737-800s.
- Tainan Airport is a commercial airport located in South District, Tainan City, Taiwan.
- On 16 April 1977, a FEAT Douglas C-47A B-247 was damaged beyond economic repair in a landing accident.
- The furthest airport from Tainan Airport (TNN) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Tainan Airport (meaning Tainan Airport is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,355 miles (19,883 kilometers) away in Mariscal Estigarribia, Paraguay.
- Because of Tainan Airport's relatively low elevation of 63 feet, planes can take off or land at Tainan 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.