Nonstop flight route between Buttonville, Ontario, Canada and Georgetown, Ascension Island, Saint Helena:
Departure Airport:

Arrival Airport:

Distance from YKZ to ASI:
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- About this route
- YKZ Airport Information
- ASI Airport Information
- Facts about YKZ
- Facts about ASI
- Map of Nearest Airports to YKZ
- List of Nearest Airports to YKZ
- Map of Furthest Airports from YKZ
- List of Furthest Airports from YKZ
- 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 Buttonville Airport (YKZ), Buttonville, Ontario, Canada and RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena would travel a Great Circle distance of 5,397 miles (or 8,686 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 Buttonville 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 Buttonville 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: | YKZ / CYKZ |
Airport Name: | Buttonville Airport |
Location: | Buttonville, Ontario, Canada |
GPS Coordinates: | 43°51'38"N by 79°22'6"W |
Area Served: | Markham, Ontario |
Operator/Owner: | Toronto Airways Limited |
Airport Type: | Public |
Elevation: | 650 feet (198 meters) |
# of Runways: | 2 |
View all routes: | Routes from YKZ |
More Information: | YKZ 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 Buttonville Airport (YKZ):
- The closest airport to Buttonville Airport (YKZ) is Billy Bishop Toronto City Airport (YTZ), which is located only 16 miles (26 kilometers) S of YKZ.
- Buttonville Airport (YKZ) has 2 runways.
- Flightline is available on 123.50 MHz.
- In September 2009, the Sifton family, owners of the airport, announced plans to re-develop the airport from 2009 to 2016 into a mixed use of commercial, retail and residential development.
- The new tower was designed and built using a modular design enabling the facility to be relocated in the future.
- The furthest airport from Buttonville Airport (YKZ) is Margaret River Airport (MGV), which is located 11,402 miles (18,350 kilometers) away in Margaret River, Western Australia, Australia.
- The new tower, representing an investment of over $2 million, replaced the existing facility which was built in 1967 and had reached the end of its useful life.
- On 8 October 2010, a small private plane of tail number C-GOYV registered to a Toronto resident made an emergency landing on Highway 407 close to Buttonville Municipal Airport.
- Buttonville Airport is privately owned, and is threatened with closure due to lack of funds.
- The airport is classified as an airport of entry by Nav Canada and is staffed by the Canada Border Services Agency.
- Because of Buttonville Airport's relatively low elevation of 650 feet, planes can take off or land at Buttonville 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.
Facts about RAF Ascension (ASI):
- RAF Ascension Island was re-garrisoned by the RAF in 1982 and used extensively as a staging base during the Falklands War.
- The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
- 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 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.
- Ascension serves as a diversion airport for ETOPS aircraft crossing the Atlantic.
- Wideawake Airfield was a US installation built in 1943 by arrangement with the British government.