Monster Mash Bash is a 21+ trick-or-treat event at Lark in Chicago, IL, on Saturday, October 31 from 9:30 PM to 3 AM. That's on Halloween itself, and entry is $19.72. Costumes are part of the fun. Guests must be 21 or older. Within three days of it, 83 more Halloween events happen around Chicago.
Saturday, October 31 · 9:30 PM – 3 AM
UTC-05:00Lark | Chicago, IL
TicketsUSD 19.72
Celebrate Halloween at Lark’s Monster Mash Bash, hosted by Jaharia from Dragula with DJ Ricky Sixx!
Saturday, October 31, 2026, 9:30 p.m. until 3 a.m. Sunday, November 1. Dance all night and enter the costume contest for a $100 cash prize.
$15 general admission • Ages 21+
In-and-out privileges all night
NÜTRL bucket special
$5 Bud Light
Lark, 3441 North Halsted Street, Chicago, United States
Lark Restaurant & Bar
It is on Saturday, October 31, 2026, from 9:30 PM to 3 AM, on Halloween itself.
It takes place at Lark, 3441 North Halsted Street, Chicago, United States.
Tickets are listed at $19.72. Prices can change, so check the ticket page for the latest.
Yes. The listing says guests must be 21 or older.
Yes, costumes are encouraged.
It runs for about 5.5 hours, from 9:30 PM to 3 AM.
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