SeaWorld Orlando Unleashes Monstrous Mayhem Sale on Howl-O-Scream Tickets. Howl-O-Scream is returning to SeaWorld this fall and for those restless spirits who are dying for a great deal, now is the time to snatch tickets. This week only during the Mayhem sale, SeaWorld Orlando is tempting guests to grab discounted event tickets before the prices begin to creep up. The best scares happen in pairs, so to get the deal guests must purchase a minimum of two tickets, each priced $38.99, that can be used on any Howl-O-Scream event night with no blackout dates.