Starfinder, by John Marco, is the first novel in the Skylords trilogy.
Thirteen year old Moth has always dreamed of flying. And Rendor, his friend Fiona’s grandfather, also had the same dream and created flying ships to allow humans to take to the skies. Rendor has also been spouting on about the dangerous Skylords. Though, no one has ever seen them. And when Moth’s old friend passes along a secret, Moth must embark on the adventure of a lifetime.