Nonstop flight route between Buttonville, Ontario, Canada and Shemya, Alaska, United States:

About this route:

A direct, nonstop flight between Buttonville Airport (YKZ), Buttonville, Ontario, Canada and Eareckson Air Station (SYA), Shemya, Alaska, United States would travel a Great Circle distance of 4,472 miles (or 7,196 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 Eareckson Air Station, 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 Eareckson Air Station. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Buttonville Airport (YKZ):

• The airport has a control tower using the frequencies 127.10 MHz for Automatic Terminal Information Service, 121.80 MHz for ground control, and 124.80 MHz for tower.
• 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.
• The new tower was designed and built using a modular design enabling the facility to be relocated in the future.
• On 28 October 2010, a press release announced that a joint real estate venture had purchased the 170-acre property on 7 October, which will be re-developed by Cadillac Fairview.
• Buttonville Airport (YKZ) has 2 runways.
• It has been agreed with the Airport and the City of Markham that no circuit practice will occur between the hours of 1600h and 2000h during all long weekend holidays.
• 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.
• On 20 June 2010, an accident occurred just off Buttonville Airport.
• 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.

Facts about Eareckson Air Station (SYA):

• Because of Eareckson Air Station's relatively low elevation of 97 feet, planes can take off or land at Eareckson Air Station 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 closest airport to Eareckson Air Station (SYA) is Casco Cove Coast Guard Station (ATU), which is located 40 miles (65 kilometers) WNW of SYA.
• The furthest airport from Eareckson Air Station (SYA) is Cape Town International Airport (CPT), which is located 10,668 miles (17,168 kilometers) away in Cape Town, South Africa.
• The limited resources assigned to the Eleventh Air Force meant only a limited number of missions could be carried out over the Kuriles.
• The base host squadron was re-designated the 5073rd Air Base Squadron on October 1962, and upgraded to a group on 15 October 1974 in recognition of the number and complexities of the tenant units it supported.
• Shemya also continued to support the Great Circle Route for MATS and later Military Airlift Command transports between Japan and Elmendorf AFB.
• In addition to being known as "Eareckson Air Station", other names for SYA include "Shemya Air Force Base", "Shemya Army Airfield" and "  ".
• The Korean War brought extensive use by the Military Air Transport Service for the logistical support of Korea and Japan.
• With the successful completion of the Aleutian Campaign in August 1943, Eleventh Air Force came within striking distance of the Japanese Kurile Islands, the northernmost being 750 miles to the south-southwest of Shemya.
• Eareckson Air Station (SYA) currently has only 1 runway.