Halloween Parties in Costa Mesa 2026

Explore The Best Of Halloween Street Carnivals & Spooky Parties in Costa Mesa

HALLOWEN NIGHT @ OC FAIRGROUNDS $10 W/RSVP BEFORE 10:30PM | 18+

 OC Fairground Costa Mesa Building 31 Oct 2026
FREE

Halloween Pet Fashion Show

 Paul Mitchell The School Costa Mesa 4 Oct 2026
USD 29