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find Halloween events for every vibe.

Carnival festival events in O'fallon, MO

Trunk or Treat
Sun, Oct 26, 3:00 PM
Fenton · Arise Church
Trunk or Treat
Sun, Oct 26, 3:00 PM
Fenton · Arise Church
SET: The Legacy Concert
Sat, Oct 11, 2:00 PM + 3 more
University City · COCA — Center of Creative Arts
SET: The Legacy Concert
Sat, Oct 11, 2:00 PM + 3 more
University City · COCA — Center of Creative Arts
St. Louis Annual Banquet
Sat, Oct 11, 6:00 PM
Loehr · Ballwin Golf Course and Event Center
St. Louis Annual Banquet
Sat, Oct 11, 6:00 PM
Loehr · Ballwin Golf Course and Event Center
Selling quickly
Meet Me In St Louis Trolley Ride October 11, 2025
Sat, Oct 11, 12:00 PM + 1 more
Kings Oak · Prism
Selling quickly
Meet Me In St Louis Trolley Ride October 11, 2025
Sat, Oct 11, 12:00 PM + 1 more
Kings Oak · Prism
Queer Professional Alliance STL Bowling Party & Costume Contest
Sun, Oct 12, 2:00 PM
Windsor Springs · Crestwood Bowl
Queer Professional Alliance STL Bowling Party & Costume Contest
Sun, Oct 12, 2:00 PM
Windsor Springs · Crestwood Bowl
SET: The Open Dress Rehearsal
Fri, Oct 10, 1:00 PM
University City · COCA — Center of Creative Arts
SET: The Open Dress Rehearsal
Fri, Oct 10, 1:00 PM
University City · COCA — Center of Creative Arts
New Years With Platinum Rock Legends with Special Guest Hit Parade
Wed, Dec 31, 7:00 PM
St. Peters · Diamond Music Hall
New Years With Platinum Rock Legends with Special Guest Hit Parade
Wed, Dec 31, 7:00 PM
St. Peters · Diamond Music Hall
Soulard Oktoberfest 2025
Sat, Oct 11, 11:00 AM
Lasalle Park · Soulard Farmers Market
Soulard Oktoberfest 2025
Sat, Oct 11, 11:00 AM
Lasalle Park · Soulard Farmers Market
Happy Hands Social Club & Songbird
Thu, Nov 13, 10:00 PM
Forest Park Southeast · The Improv Shop
Happy Hands Social Club & Songbird
Thu, Nov 13, 10:00 PM
Forest Park Southeast · The Improv Shop
PLASTIC KINGS HALLOWEEN BASH
Fri, Oct 31, 8:00 PM
St. Peters · Diamond Music Hall
PLASTIC KINGS HALLOWEEN BASH
Fri, Oct 31, 8:00 PM
St. Peters · Diamond Music Hall
Nearly full
Drag Bingo Night – Fun for Charity
Fri, Oct 24, 6:00 PM
Forest Park Southeast · Tropical Liqueurs
Nearly full
Drag Bingo Night – Fun for Charity
Fri, Oct 24, 6:00 PM
Forest Park Southeast · Tropical Liqueurs
Sales end soon
John P. Kee & New Life: Throwback Tour St. Louis
Friday at 6:00 PM
Florissant · The Christian Life Center
Sales end soon
John P. Kee & New Life: Throwback Tour St. Louis
Friday at 6:00 PM
Florissant · The Christian Life Center
Lake St. Louis Mothers Club's 9th Annual Vendor & Craft Fair
Sat, Nov 15, 8:30 AM
Lake St. Louis · 100 Cognac Ct
Lake St. Louis Mothers Club's 9th Annual Vendor & Craft Fair
Sat, Nov 15, 8:30 AM
Lake St. Louis · 100 Cognac Ct
MEDFA 2025 Annual Conference
Thu, Oct 9, 12:00 PM
Midtown · City Foundry STL
MEDFA 2025 Annual Conference
Thu, Oct 9, 12:00 PM
Midtown · City Foundry STL
St. Louis Rare Book Fair: Opening Night Party
Fri, Oct 10, 4:00 PM
Downtown · Missouri Athletic Club
St. Louis Rare Book Fair: Opening Night Party
Fri, Oct 10, 4:00 PM
Downtown · Missouri Athletic Club
Sales end soon
Upright Citizens Brigade: ASSSSCAT (Late Extended Cut)
Fri, Nov 14, 10:00 PM
Forest Park Southeast · The Improv Shop
Sales end soon
Upright Citizens Brigade: ASSSSCAT (Late Extended Cut)
Fri, Nov 14, 10:00 PM
Forest Park Southeast · The Improv Shop
October Fest: Jazz, Drinks, & Business Growth Retreat
Fri, Oct 24, 8:00 AM + 1 more
Columbus Square · Four Seasons Hotel St. Louis
October Fest: Jazz, Drinks, & Business Growth Retreat
Fri, Oct 24, 8:00 AM + 1 more
Columbus Square · Four Seasons Hotel St. Louis
Reels on the Rooftop 2025
Thu, Oct 9, 7:30 PM + 2 more
Clayton · Le Meridien St. Louis Clayton
Reels on the Rooftop 2025
Thu, Oct 9, 7:30 PM + 2 more
Clayton · Le Meridien St. Louis Clayton
Mouse Race Event Sponsor Sales
Fri, Oct 24, 5:00 PM
St. Charles · 1900 W Randolph St
Mouse Race Event Sponsor Sales
Fri, Oct 24, 5:00 PM
St. Charles · 1900 W Randolph St
SET: The Sensory Friendly Workshop
Sun, Oct 12, 10:15 AM
University City · COCA — Center of Creative Arts
SET: The Sensory Friendly Workshop
Sun, Oct 12, 10:15 AM
University City · COCA — Center of Creative Arts

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