Ontario Halloween Events

Halloween events Happening Next in Ontario, CA

Crazy, Scary Spooky, Hilarious (Halloween Party)

Mix Champagne Lounge 24 Oct 2025
HALLOWEEN FREE

Hocus Pocus Drag Brunch

Ontario Improv Comedy Club 5 Oct 2025
BRUNCH

Lavell Crawford at Ontario Improv Comedy Club

Ontario Improv Comedy Club 31 Oct 2025
COMEDY

Spooky Szn Treasure Hunt

1010 E Mission Blvd, Ontario, CA, United States, California 91761 11 Oct 2025
TRIPS-ADVENTURES

Levitating Dua Lipa and Women of Pop show at City of Ontario Trunk or Treat Oct 24th

2455 E Riverside Dr, Ontario, CA 91761, United States 24 Oct 2025
TRUNK-OR-TREAT

πŸŽƒπŸ‘» FREEky Friday: Family Halloween Party at Big Al’s! πŸ‘»πŸŽƒ

4120 E. 4th St., Ontario, CA, United States, California 91764 31 Oct 2025
HALLOWEEN

Lavell Crawford

Ontario Improv 30 Oct 2025
TRIPS-ADVENTURES

Paint n Sip at THE CHOCOLATE BAR ONTARIO

The Chocolate Bar Ontario 19 Oct 2025
SIP-AND-PAINT USD 39