Nonstop flight route between Ontario (near Los Angeles), California, United States and Georgetown, Ascension Island, Saint Helena:
Departure Airport:

Arrival Airport:

Distance from ONT to ASI:
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- About this route
- ONT Airport Information
- ASI Airport Information
- Facts about ONT
- Facts about ASI
- Map of Nearest Airports to ONT
- List of Nearest Airports to ONT
- Map of Furthest Airports from ONT
- List of Furthest Airports from ONT
- Map of Nearest Airports to ASI
- List of Nearest Airports to ASI
- Map of Furthest Airports from ASI
- List of Furthest Airports from ASI
About this route:
A direct, nonstop flight between LA/Ontario International Airport (ONT), Ontario (near Los Angeles), California, United States and RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena would travel a Great Circle distance of 7,281 miles (or 11,717 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 LA/Ontario International Airport and RAF Ascension, 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 LA/Ontario International Airport and RAF Ascension. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | ONT / KONT |
Airport Name: | LA/Ontario International Airport |
Location: | Ontario (near Los Angeles), California, United States |
GPS Coordinates: | 34°3'21"N by 117°36'3"W |
Area Served: | Ontario, California / Inland Empire, California |
Operator/Owner: | Los Angeles World Airports |
Airport Type: | Public |
Elevation: | 944 feet (288 meters) |
# of Runways: | 2 |
View all routes: | Routes from ONT |
More Information: | ONT Maps & Info |
Arrival 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 |
Facts about LA/Ontario International Airport (ONT):
- The closest airport to LA/Ontario International Airport (ONT) is Chino Airport (CNO), which is located only 6 miles (10 kilometers) SSW of ONT.
- Because of LA/Ontario International Airport's relatively low elevation of 944 feet, planes can take off or land at LA/Ontario International 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.
- The furthest airport from LA/Ontario International Airport (ONT) is Pierrefonds Airport (ZSE), which is located 11,460 miles (18,443 kilometers) away in Saint-Pierre, Réunion.
- LA/Ontario International Airport handled 4,812,006 passengers last year.
- The airport covers 1,700 acres and has two runways.
- LA/Ontario Airport is owned by the city of Los Angeles.
- LA/Ontario International Airport (ONT) has 2 runways.
- In 1946, the Ontario Municipal Airport was renamed the "Ontario International Airport" because of the transpacific cargo flights originating from the facility.
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 Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
- Wideawake Airfield was a US installation built in 1943 by arrangement with the British government.
- 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.
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
- 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.