Hmmm, I thought you did own the airspace above your property. 'How far up" was debatable, but ownership of airspace over your property is not in question. For Causey vs US Government, chicken farmer named Thomas Lee Causby sued the US government for flying approximately 83 feet above his property, the noise of which caused a bunch of Causby’s chicken’s to accidentally kill themselves by running into walls. Causby won his case and the courts agreed that although a property owner wasn’t entitled to own all of the air above their land, they were entitled to enough so that planes they were entitled to enough that planes flying overhead wouldn’t kill their chickens. See case here.