The need to purchase two seats for someone with cerebral palsy will depend on their individual circumstances, such as their size, mobility, and the type and severity of their cerebral palsy. In some cases, individuals with cerebral palsy may require extra space due to the presence of equipment, such as a wheelchair, that they need to travel with. In these situations, it may be necessary to purchase an additional seat to accommodate the equipment and ensure the individual's safety and comfort.


However, in other cases where an individual with cerebral palsy does not require additional space, it may not be necessary to purchase a second seat. Airlines typically have policies in place regarding passengers with disabilities and the need for additional seating, so it is recommended that you check with the airline prior to booking to determine their policies and any requirements for passengers with disabilities.