The law in Canada is that a property owner owns only so much of the air space that can be reasonably occupied or used in connection with the land below.
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Air navigation charges are fees that airlines pay to use the airspace and services of different countries and regions. They can vary widely depending on the distance, route, weight, and type of aircraft, as well as the regulations and agreements of each authority.
Airspace is managed by Transport Canada and detailed information regarding exact dimensions and classification is available in the Designated Airspace Handbook which is published every fifty-six days by Nav Canada.
Vertical boundaryThere is no international agreement on the vertical extent of sovereign airspace, with suggestions ranging from about 30 km (19 mi)—the extent of the highest aircraft and balloons—to about 160 km (100 mi)—approximately the lowest extent of short-term stable orbits.