95b323b7_of_Size__Policies___Yahoo_News__Stated_policy
[Airline] Air Canada [Costs] Those without medical approval may expect to be required to purchase a second seat at a cost to be determined by the airline. Not specified. [Stated policy] 
After a much talked-about Supreme Court ruling, the airline must offer passengers of size a free seat, but only after receiving an approved doctors note.
Airline "Customer of Size" Policies - Yahoo News
Stated policy