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X-Plane 9 Scenery--CYKZ Buttonville Muni. Buttonville Municipal Airport is a medium-sized airport in Buttonville, Ontario, Canada, within Markham, bordering Richmond Hill and 29 km (18 miles) north of downtown Toronto. Buttonville Airport began as a grass airstrip in 1953 when Leggat Aviation moved its operations from Barker Field in Toronto. The airstrip became an official airport in 1962. Requires OpenSceneryX. By Jacques Brault.