Universal Orlando is bringing back the BOGO ticket deal for this year’s Halloween Horror Nights with its “Buy an Event Night, Get a Second Night Free” offer. The event, which will be celebrating its 30th year, runs select nights September 10 through November 1.

Available for purchase online only through June 3, the “Buy an Event Night, Get a Second Night Free” offer gives guests the flexibility to choose two nights from 36 set dates, including select Saturdays, to attend the world’s premier Halloween event. The chosen dates do not have to be consecutive.

Guests can also stay at Universal Orlando with a vacation package that includes Halloween Horror Nights special ticket offer, Universal Orlando hotel accommodations, tickets to Universal Orlando’s three parks and more. Guests who book a vacation package that includes the offer can be among the first to book event upgrades that will take their Halloween Horror Nights experience, like RIP Tours and Behind the Screams: Unmasking the Horror tours, before they go on sale to the general public.

Halloween Horror Nights will return with to celebrate 30 years, unleashing all-new scares plus re-imagined haunts inspired by the past in Universal Studios Florida, as they encounter 10 brand-new haunted houses, five scare zones, and live entertainment.