I can say that Palma de Mallorca Airport is 100% accessible.
It has recently been refurbished (only 2 months ago) and is equipped with toilets, cabins, accesses, ramps, helpers so that there are no limitations.
In addition, the city of Palma (capital of Mallorca) is also quite adapted. Hotels must comply with these regulations.
Some beaches, such as Palma or Playa de Arenal, are also accessible via ramps and wooden walkways.