Nonstop flight route between Georgetown, Ascension Island, Saint Helena and Watson Island, Miami-Dade County, Florida, United States:
Departure Airport:

Arrival Airport:

Distance from ASI to MPB:
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- About this route
- ASI Airport Information
- MPB Airport Information
- Facts about ASI
- Facts about MPB
- 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 MPB
- List of Nearest Airports to MPB
- Map of Furthest Airports from MPB
- List of Furthest Airports from MPB
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Miami Seaplane Base (MPB), Watson Island, Miami-Dade County, Florida, United States would travel a Great Circle distance of 4,989 miles (or 8,029 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 Miami 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 Miami 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: |
|
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: | MPB / |
Airport Names: |
|
Location: | Watson Island, Miami-Dade County, Florida, United States |
GPS Coordinates: | 25°46'41"N by 80°10'13"W |
Area Served: | Miami, Florida |
Operator/Owner: | City of Miami Property Mgmt Section |
Airport Type: | Public use |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from MPB |
More Information: | MPB Maps & Info |
Facts about RAF Ascension (ASI):
- The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of 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.
- RAF Ascension Island is also the refuelling point for the Ministry of Defence's South Atlantic Air Bridge flights to RAF Mount Pleasant, on the Falkland Islands, from RAF Brize Norton in Oxfordshire, in the UK.
- 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".
- In 1939 Ascension became important as a HF/DF radio station covering trade routes.
Facts about Miami Seaplane Base (MPB):
- The closest airport to Miami Seaplane Base (MPB) is Miami International Airport (MIA), which is located only 8 miles (12 kilometers) W of MPB.
- In addition to being known as "Miami Seaplane Base", another name for MPB is "X44".
- Because of Miami Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Miami 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.
- Miami Seaplane Base (MPB) currently has only 1 runway.
- The furthest airport from Miami Seaplane Base (MPB) is Shark Bay Airport (MJK), which is located 11,582 miles (18,640 kilometers) away in Monkey Mia, Western Australia, Australia.