ABC We're days away from the season finale of American Idol and we've just learned that all three judges are set to perform on the episode. The season 24 finale will air on ABC on Monday, May 11 at 8:00pm ET and there's an incredible list of performers set to appear on the episode. ABC just confirmed that Carrie Underwood, Luke Bryan, and Lionel Richie will all perform on the finale and the songs they're doing have also been revealed.