Whether by magic or by haunting, books are many times portrayed as being able to fly. This is usually done by the book flapping its pages like the wings of a bird. If in a video game, may be used as a minor mook.

See also Books That Bite. Examples:

Doraemon: In one episode, by using the 'Hypnotizing Megaphone', Nobita and Suneo make their comic books take on the characteristics of birds, specifically those of swans, so that the books can fly away from being dumped by their owners' mothers. Cue all the books flying south and just not coming back even when their owners want them to, as swans are migratory birds and the time is winter.