Hollywood Horror Nights 2024 Dates. 3, 2024 at universal studios hollywood (california). Universal studios hollywood’s longest halloween horror nights season yet will be held on 40 select nights.

5, 6, 7, 8, 12, 13, 14, 15, 19, 20, 21, 22, 26, 27, 28 and 29. Universal studios hollywood halloween horror nights is back!