Gate card: Air Canada (AC)

The airline's policy: “Additional seating / extra seat (One Person, One Fare for travel within Canada)”

Air Canada provides an extra adjacent seat FREE OF CHARGE on itineraries within Canada for passengers who need additional seating due to disability (Canada's CTA 'One Person, One Fare' requirement, whose qualifying language — the regulator's words, not ours — includes persons 'disabled by severe obesity'). The free seat requires medical documentation: the passenger and their healthcare provider complete the Air Travel Requirements Assessment Form and email it to Accessibility Services at least 48 hours before departure. On itineraries outside Canada, the extra seat is NOT free and must be purchased. Adjacent seats are assigned in advance; only one reservation/ticket in the traveller's name is required. Extra seating is not available in the Signature Class cabin due to cabin configuration.

Refunds: Not published on the pages reviewed; aircanada.com does not state refund terms specific to purchased extra seats on international itineraries.