According to CBR, Fathom Events is hosting select screenings of Batman: The Killing Joke for one day only in theaters. Tickets will be available on June 17 for the screening that takes place on July 25. In addition to showing the entire animated feature, fans will also be treated to a never-before-seen documentary in which Mark Hamill discusses what the Batman universe means to him.
The film will be in theaters a couple days after the film premieres at SDCC and a day before the feature releases on Blu-ray. You can go to their website for participating theaters and location details. I wasn't able to find any there yet, but perhaps they will update it later.