Survivor, by Chuck Palahniuk

This is by the same author as the better-known Fight Club. It's stylistically and thematically similar to that earlier work, and it also shares many of the same flaws.
Survivor follows the story of Tender Branson, a refugee from a fundamentalist suicide cult, as he meanders through his unexpected life in the outside world, meets a girl, finds out he has a brother who may or may not be trying to kill him, becomes famous, loses everything, and hijacks a plane. Not necessarily in that order.
It's a fun ride from a writer with an acerbic wit, that will likely appeal to younger adults or males, or those who enjoyed Fight Club.