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find Halloween events for every vibe.

Holiday events in Ontario, CA

Search for something you love or check out popular events in your area.

The Haunted Carwash in Montclair
Fri, Oct 17, 6:00 PM + 31 more
Indian Hill · Splash N Go Express Car Wash
The Haunted Carwash in Montclair
Fri, Oct 17, 6:00 PM + 31 more
Indian Hill · Splash N Go Express Car Wash
Glow Party
Sat, Oct 25, 4:00 PM
Dowtown · 217 E A St
Glow Party
Sat, Oct 25, 4:00 PM
Dowtown · 217 E A St
Halloween Costume Ball Murder Mystery Dinner
Fri, Oct 24, 6:00 PM
Los Serranos · Los Serranos Country Club
Halloween Costume Ball Murder Mystery Dinner
Fri, Oct 24, 6:00 PM
Los Serranos · Los Serranos Country Club
Haunted Tours
Today at 7:30 PM + 19 more
Downtown · In Front of Eliza Tibbets Statue at 3615 Main St #102
Haunted Tours
Today at 7:30 PM + 19 more
Downtown · In Front of Eliza Tibbets Statue at 3615 Main St #102
Riverside Ugly Sweater Bar Crawl
Sat, Dec 13, 4:00 PM
Downtown · Killer Queens Social House
Riverside Ugly Sweater Bar Crawl
Sat, Dec 13, 4:00 PM
Downtown · Killer Queens Social House
Riverside Official Halloween Bar Crawl
Fri, Oct 31, 5:00 PM
Downtown · Killer Queens Social House
Riverside Official Halloween Bar Crawl
Fri, Oct 31, 5:00 PM
Downtown · Killer Queens Social House
All That Glitters: New Year’s Eve Gala
Wed, Dec 31, 7:30 PM
Downtown · 3649 Mission Inn Avenue
All That Glitters: New Year’s Eve Gala
Wed, Dec 31, 7:30 PM
Downtown · 3649 Mission Inn Avenue
Halloween Cookie Decorating Class
Mon, Oct 27, 6:00 PM
Anaheim Hills · East Anaheim Community Center
Halloween Cookie Decorating Class
Mon, Oct 27, 6:00 PM
Anaheim Hills · East Anaheim Community Center
Riverside Spooky Halloween: A Family Ghost Hunt
Thu, Oct 30, 5:00 PM + 55 more
Downtown · 4102 Orange St
Riverside Spooky Halloween: A Family Ghost Hunt
Thu, Oct 30, 5:00 PM + 55 more
Downtown · 4102 Orange St
2025 Riverside Halloween Bar Crawl
Sat, Nov 1, 4:00 PM
Downtown · Palenque kitchen by Mezcal
2025 Riverside Halloween Bar Crawl
Sat, Nov 1, 4:00 PM
Downtown · Palenque kitchen by Mezcal
Riverside Day of The Dead Bar Crawl - Dia De Muertos
Sat, Nov 1, 4:00 PM
Downtown · Killer Queens Social House
Riverside Day of The Dead Bar Crawl - Dia De Muertos
Sat, Nov 1, 4:00 PM
Downtown · Killer Queens Social House
Riverside St. Patrick's Day Bar Crawl
Sat, Mar 14, 1:00 PM
Downtown · Killer Queens Social House
Riverside St. Patrick's Day Bar Crawl
Sat, Mar 14, 1:00 PM
Downtown · Killer Queens Social House
Halloween Drag Queen Story Time...But Make It Cute!
Sat, Oct 4, 3:30 PM
Mission Grove · 473 E Alessandro Blvd suite b
Halloween Drag Queen Story Time...But Make It Cute!
Sat, Oct 4, 3:30 PM
Mission Grove · 473 E Alessandro Blvd suite b
Riverside Cinco De Mayo Bar Crawl
Sat, May 2, 5:00 PM
Downtown · Killer Queens Social House
Riverside Cinco De Mayo Bar Crawl
Sat, May 2, 5:00 PM
Downtown · Killer Queens Social House
The Rocky Horror Picture Show (with live shadowcast)
Fri, Oct 31, 11:59 PM
Des Moines · The Phantom Projects Theatre at La Habra Depot
The Rocky Horror Picture Show (with live shadowcast)
Fri, Oct 31, 11:59 PM
Des Moines · The Phantom Projects Theatre at La Habra Depot
40 Year Anniversary Ruby Jubilee Gala 2025
Sat, Oct 4, 5:00 PM
Valencia · 2055 Elks Dr
40 Year Anniversary Ruby Jubilee Gala 2025
Sat, Oct 4, 5:00 PM
Valencia · 2055 Elks Dr
Draughts and Dragons - Spooky Edition!
Thu, Oct 16, 6:30 PM
La Jolla · The Bruery Tasting Room
Draughts and Dragons - Spooky Edition!
Thu, Oct 16, 6:30 PM
La Jolla · The Bruery Tasting Room
Just added!
✨ Petals & Pastries: A Fall Bloom Bar + Cookie Decorating Experience ✨
Sun, Oct 12, 11:00 AM
Arlington · The Flower Alley
Just added!
✨ Petals & Pastries: A Fall Bloom Bar + Cookie Decorating Experience ✨
Sun, Oct 12, 11:00 AM
Arlington · The Flower Alley
Paint you pet Halloween Edition
Sat, Oct 18, 10:00 AM
Park Royale · Local Gem Collective
Paint you pet Halloween Edition
Sat, Oct 18, 10:00 AM
Park Royale · Local Gem Collective
Haunted HEAT Halloween
Fri, Oct 31, 9:30 PM
Hotel Circle · HEAT Ultra Lounge
Haunted HEAT Halloween
Fri, Oct 31, 9:30 PM
Hotel Circle · HEAT Ultra Lounge

Trends in Ontario

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Frequently asked questions about Ontario

What are the best events to attend?

According to Eventbrite, the best events are:

The Haunted Carwash in Montclair

Halloween Costume Ball Murder Mystery Dinner

Riverside Ugly Sweater Bar Crawl

Which events are currently trending in Ontario?

The trending searches this month in Ontario are:

ontario convention center

Which events are coming up?

Discover the best events happening soon – you don't want to miss them:

Halloween Drag Queen Story Time...But Make It Cute!

40 Year Anniversary Ruby Jubilee Gala 2025

✨ Petals & Pastries: A Fall Bloom Bar + Cookie Decorating Experience ✨