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

Arrival Airport:

Distance from ASI to UGI:
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- About this route
- ASI Airport Information
- UGI Airport Information
- Facts about ASI
- Facts about UGI
- 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 UGI
- List of Nearest Airports to UGI
- Map of Furthest Airports from UGI
- List of Furthest Airports from UGI
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and San Juan (Uganik) Seaplane Base (UGI), Uganik Island, United States would travel a Great Circle distance of 8,364 miles (or 13,461 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 San Juan (Uganik) Seaplane Base, 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 San Juan (Uganik) Seaplane Base. 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: | UGI / |
Airport Names: |
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Location: | Uganik Island, United States |
GPS Coordinates: | 57°43'49"N by 153°19'14"W |
Area Served: | San Juan (Uganik), Alaska |
Operator/Owner: | San Juan Fishing & Packing Co. |
Airport Type: | Public |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from UGI |
More Information: | UGI Maps & Info |
Facts about RAF Ascension (ASI):
- 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.
- 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.
- The station comes under the overall jurisdiction of the Commander British Forces South Atlantic Islands, an officer of one-star rank.
- The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
Facts about San Juan (Uganik) Seaplane Base (UGI):
- Because of San Juan (Uganik) Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at San Juan (Uganik) Seaplane Base 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.
- Scheduled passenger service to Kodiak, Alaska, is subsidized by the United States Department of Transportation via the Essential Air Service program.
- The closest airport to San Juan (Uganik) Seaplane Base (UGI) is West Point Village Seaplane Base (KWP), which is located only 9 miles (14 kilometers) WNW of UGI.
- San Juan (Uganik) Seaplane Base (UGI) currently has only 1 runway.
- The furthest airport from San Juan (Uganik) Seaplane Base (UGI) is Port Elizabeth International Airport (PLZ), which is located 10,795 miles (17,373 kilometers) away in Port Elizabeth, South Africa.
- In addition to being known as "San Juan (Uganik) Seaplane Base", other names for UGI include "WSJ / UGI" and "WSJ".