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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.

Just added!
Spooky Baddie Night
Sat, Oct 25, 7:00 PM
Downtown · Casa Bloom Studios
Just added!
Spooky Baddie Night
Sat, Oct 25, 7:00 PM
Downtown · Casa Bloom Studios
Lucky Lounge Presents: Halloween Costume Party
Thu, Oct 30, 10:00 PM
North Euclid · 1773 W Lincoln Ave
Lucky Lounge Presents: Halloween Costume Party
Thu, Oct 30, 10:00 PM
North Euclid · 1773 W Lincoln Ave
New Years Eve 2026
Wed, Dec 31, 9:00 PM
Hotel Circle · HEAT Ultra Lounge
New Years Eve 2026
Wed, Dec 31, 9:00 PM
Hotel Circle · HEAT Ultra Lounge
Do The Ugly Sweater Pub Crawl in Santa Ana
Sat, Dec 13, 4:30 PM
Downtown · Proof
Do The Ugly Sweater Pub Crawl in Santa Ana
Sat, Dec 13, 4:30 PM
Downtown · Proof
Just added!
Magically Enchanted Costume Party
Sat, Oct 25, 8:00 PM
Historic District · BOTI Studios
Just added!
Magically Enchanted Costume Party
Sat, Oct 25, 8:00 PM
Historic District · BOTI Studios
Spooky Sculpt
Thu, Oct 30, 6:00 PM
Santa Ana Heights · 3195 Airport Loop Dr suite d2
Spooky Sculpt
Thu, Oct 30, 6:00 PM
Santa Ana Heights · 3195 Airport Loop Dr suite d2
Flow into Fall
Sun, Nov 16, 9:30 AM
Santa Ana Heights · 3195 Airport Loop Dr suite d2
Flow into Fall
Sun, Nov 16, 9:30 AM
Santa Ana Heights · 3195 Airport Loop Dr suite d2
Selling quickly
P10NEER Halloween Party
Saturday at 7:00 PM
Santa Ana Heights · P10neer
Selling quickly
P10NEER Halloween Party
Saturday at 7:00 PM
Santa Ana Heights · P10neer
Mystical and Enchanting Halloween Night for Teens and Adults
Fri, Oct 31, 7:00 PM
Shirley · Sedona Star Holistic Spa
Mystical and Enchanting Halloween Night for Teens and Adults
Fri, Oct 31, 7:00 PM
Shirley · Sedona Star Holistic Spa
Halloween Party! Fairy Forest Venue
Sat, Oct 25, 6:30 PM
Downtown Alhambra · happy humble hub
Halloween Party! Fairy Forest Venue
Sat, Oct 25, 6:30 PM
Downtown Alhambra · happy humble hub
HALLOWEEN NIGHT "THE PURGE" @ BLEU NIGHT CLUB FRIDAY OCT 31ST | 18+
Fri, Oct 31, 10:00 PM
Civic Center · Bleu Restaurant & Dancing
HALLOWEEN NIGHT "THE PURGE" @ BLEU NIGHT CLUB FRIDAY OCT 31ST | 18+
Fri, Oct 31, 10:00 PM
Civic Center · Bleu Restaurant & Dancing
HALLOWEEN NIGHT @ BLEU NIGHT CLUB ,FRIDAY OCT 31ST
Fri, Oct 31, 10:00 PM
Civic Center · Bleu Restaurant & Dancing
HALLOWEEN NIGHT @ BLEU NIGHT CLUB ,FRIDAY OCT 31ST
Fri, Oct 31, 10:00 PM
Civic Center · Bleu Restaurant & Dancing
99 Bottles & Cocktails “Halloween Party”
Fri, Oct 24, 9:00 PM
Los Alamitos Junction · 99 Bottles & Cocktails
99 Bottles & Cocktails “Halloween Party”
Fri, Oct 24, 9:00 PM
Los Alamitos Junction · 99 Bottles & Cocktails
Esthie Holiday Party
Sat, Dec 13, 7:00 PM
International Cultural District · The Gallery
Esthie Holiday Party
Sat, Dec 13, 7:00 PM
International Cultural District · The Gallery
Pasadena Ca's Best Halloween Weekend Bar Crawl
Downtown · Best Bars in Pasadena
Pasadena Ca's Best Halloween Weekend Bar Crawl
Downtown · Best Bars in Pasadena
THE HAUNTED COMPOUND NOCHE DE BRUJAS WITH J VALENTINO & DJ IRONY
Fri, Oct 31, 9:00 PM
Simons · The Compound by Dirt Dog
THE HAUNTED COMPOUND NOCHE DE BRUJAS WITH J VALENTINO & DJ IRONY
Fri, Oct 31, 9:00 PM
Simons · The Compound by Dirt Dog
THE HAUNTED COMPOUND NOCHE DE BRUJAS WITH JVALENTINO & DJ IRONY
Fri, Oct 31, 9:00 PM
Simons · The Compound by Dirt Dog
THE HAUNTED COMPOUND NOCHE DE BRUJAS WITH JVALENTINO & DJ IRONY
Fri, Oct 31, 9:00 PM
Simons · The Compound by Dirt Dog
GOONS & GHOULS W/ COYOTE
Sat, Oct 25, 9:00 PM
Auto Row · Jianghu
GOONS & GHOULS W/ COYOTE
Sat, Oct 25, 9:00 PM
Auto Row · Jianghu
DISCO SAVED X-MAS
Sun, Dec 7, 3:00 PM
Ocean View · The Circle OC
DISCO SAVED X-MAS
Sun, Dec 7, 3:00 PM
Ocean View · The Circle OC
Pasadena Official Halloween Bar Crawl
Fri, Oct 31, 5:00 PM
Downtown · Behind Bars
Pasadena Official Halloween Bar Crawl
Fri, Oct 31, 5:00 PM
Downtown · Behind Bars

Trends in Ontario

Explore more trends

Explore more trends

Frequently asked questions about Ontario

What are the best party events to attend?

According to Eventbrite, the best party events are:

Lucky Lounge Presents: Halloween Costume Party

New Years Eve 2026

Do The Ugly Sweater Pub Crawl in Santa Ana

Magically Enchanted Costume Party

Which events are currently trending in Ontario?

The trending searches this month in Ontario are:

ontario convention center

halloween events

Which party events are coming up?

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

P10NEER Halloween Party

99 Bottles & Cocktails “Halloween Party”

Halloween Party! Fairy Forest Venue

Spooky Baddie Night