What are the location, dates & hours of Sound On Sound? Updated September 14, 2023 01:17 Seaside Park in Bridgeport, CT September 30 - October 1, 2023 Gates open at 11:45 AM ET each day The festival ends approximately 11:00PM each night Related articles Is there a schedule of performances? Do you have lockers available for rent? What kind of food is going to be available? Is there a current map of the festival grounds? Can I leave/re-enter on the same day?