Image Credit: Disney Avatar: Fire and Ash hit theaters on December 19, 2025, three years after the second film of the franchise was released. James Cameron's third Avatar installment tackles even more loss, pain and battle. And with most of the acclaimed director's projects, moviegoers already know that it's going to be a long duration at the theater. So, how long is the new Avatar movie? During an interview with Esquire ahead of the release of Avatar: Fire and Ash, James discussed how his latest major box office hit delves into significant themes about our reality.