Nonstop flight route between Georgetown, Ascension Island, Saint Helena and Saga, Kyūshū, Japan:
Departure Airport:

Arrival Airport:

Distance from ASI to HSG:
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- About this route
- ASI Airport Information
- HSG Airport Information
- Facts about ASI
- Facts about HSG
- 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 HSG
- List of Nearest Airports to HSG
- Map of Furthest Airports from HSG
- List of Furthest Airports from HSG
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Saga Airport (HSG), Saga, Kyūshū, Japan would travel a Great Circle distance of 9,591 miles (or 15,435 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 Saga 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 Saga 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: | HSG / RJFS |
Airport Names: |
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Location: | Saga, Kyūshū, Japan |
GPS Coordinates: | 33°8'58"N by 130°18'7"E |
Area Served: | Fukuoka–Kitakyushu metropolitan area |
Operator/Owner: | Saga Prefecture |
Airport Type: | Public |
Elevation: | 6 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from HSG |
More Information: | HSG Maps & Info |
Facts about RAF Ascension (ASI):
- 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 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.
- RAF Ascension Island was re-garrisoned by the RAF in 1982 and used extensively as a staging base during the Falklands War.
- In 1939 Ascension became important as a HF/DF radio station covering trade routes.
- Ascension Island Auxiliary Field was being built by 181 men from Saint Helena by 1957
- 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".
Facts about Saga Airport (HSG):
- In 2004, the airport's hours were extended to allow service between midnight and 4 a.m., and ANA began overnight cargo service between Saga and Tokyo, initially using passenger aircraft but switching to Boeing 767 freighter aircraft in 2006.
- The furthest airport from Saga Airport (HSG) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Saga Airport (meaning Saga Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,275 miles (19,755 kilometers) away in Rio Grande, Brazil.
- Because of Saga Airport's relatively low elevation of 6 feet, planes can take off or land at Saga 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.
- In addition to being known as "Saga Airport", other names for HSG include "佐賀空港" and "Saga-kūkō".
- The closest airport to Saga Airport (HSG) is Nagasaki Airport (NGS), which is located 28 miles (45 kilometers) SW of HSG.
- ANA currently operates a 767 freighter on an overnight Kansai-Haneda-Saga-Kansai route on weeknights only.
- Saga Airport (HSG) currently has only 1 runway.