Nonstop flight route between Georgetown, Ascension Island, Saint Helena and San José, Costa Rica:
Departure Airport:

Arrival Airport:

Distance from ASI to SJO:
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- About this route
- ASI Airport Information
- SJO Airport Information
- Facts about ASI
- Facts about SJO
- 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 SJO
- List of Nearest Airports to SJO
- Map of Furthest Airports from SJO
- List of Furthest Airports from SJO
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Juan Santamaría International Airport (SJO) (SJO), San José, Costa Rica would travel a Great Circle distance of 4,960 miles (or 7,983 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 Juan Santamaría International Airport (SJO), 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 Juan Santamaría International Airport (SJO). 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: | SJO / MROC |
Airport Names: |
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Location: | San José, Costa Rica |
GPS Coordinates: | 9°59'38"N by 84°12'32"W |
Area Served: | San José, Alajuela, Heredia, Cartago |
Operator/Owner: | Government of Costa Rica |
Airport Type: | Public |
Elevation: | 3022 feet (921 meters) |
# of Runways: | 1 |
View all routes: | Routes from SJO |
More Information: | SJO Maps & Info |
Facts about RAF Ascension (ASI):
- The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
- 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.
- 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.
- In 1939 Ascension became important as a HF/DF radio station covering trade routes.
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
- The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
Facts about Juan Santamaría International Airport (SJO) (SJO):
- The furthest airport from Juan Santamaría International Airport (SJO) (SJO) is Cocos (Keeling) Island Airport (CCK), which is nearly antipodal to Juan Santamaría International Airport (SJO) (meaning Juan Santamaría International Airport (SJO) is almost on the exact opposite side of the Earth from Cocos (Keeling) Island Airport), and is located 12,270 miles (19,746 kilometers) away in Cocos Islands, Australia.
- Only passengers that show a ticket are allowed to enter the terminal.
- All domestic flights depart from the Domestic Terminal.
- Juan Santamaría International Airport (SJO) (SJO) currently has only 1 runway.
- The closest airport to Juan Santamaría International Airport (SJO) (SJO) is Tobías Bolaños International Airport (SYQ), which is located only 5 miles (9 kilometers) ESE of SJO.
- Juan Santamaría International Airport (SJO) handled 4,257,606 passengers last year.
- In addition to being known as "Juan Santamaría International Airport (SJO)", another name for SJO is "Aeropuerto Internacional Juan Santamaría".