Halloween Events in Ontario, CA
Haunted houses, home haunts, festivals and spooky nights out
We're tracking 2 spooky events in Ontario, CA right now, from walk-through home haunts built by neighbors to full commercial haunted houses, plus festivals, markets and Halloween parties. Every listing has dates, an address and one-tap directions.
Markets in Ontario, CA
Markets
Halloween on Xmas
1021 N Milliken Ave·Ontario, CA·Dec 19, 2026
1021 N Milliken Ave·Ontario, CA·Dec 19, 2026
Witchy & MetaphysicalOddities & CuriositiesDark Holiday Market+7
Conventions in Ontario, CA
Conventions
Creep IE Con
Ontario, CA·Feb 5, 2027 – Feb 7
Ontario, CA·Feb 5, 2027 – Feb 7
Horror ConVendor HallVendors+4