Looking for the best adult Halloween events in San Antonio in 2025? From haunted houses and ghost tours to pub crawls and after-dark parties, the Alamo City is full of spooky fun for grown-ups this October. 

Here’s your ultimate guide to the best Halloween events in San Antonio for adults.

Fright Fest at Six Flags Fiesta Texas

Select Nights, September 11 – November 1, 2026

For pure adrenaline, head to Six Flags Fiesta Texas during Fright Fest. Haunted mazes like Hexenhaus and Nosferatu bring nightmares to life, while scare zones like Carnival of Terrors and Hell Valley Cemetery ensure no path is safe.

Catch live Halloween shows such as Monster Mash Bash or the eerie Crossroads, then ride coasters like Dr. Diabolical’s Cliffhanger under the cover of darkness.

With terrifying mazes, themed food and cocktails, and fireworks to cap the night, Fright Fest is a must for thrill-seekers.

Howl-O-Scream at SeaWorld San Antonio

Select Days September 11 – November 1, 2026

When the sun sets, SeaWorld San Antonio transforms into the largest Halloween event in Texas.

Howl-O-Scream features haunted houses, immersive scare zones, and chilling live entertainment. Fan-favorite haunts like Milton Creek Manor and Atlantis: The Cursed Chasm return, alongside scare zones crawling with vampires, zombies, and haunted dolls.

Adults can toast to the terror at Till Death Do Us Party, a spooky reception complete with a live band and eerie cocktails.

Haunted Pub Crawls & Ghostly Tours

Sisters Grimm Haunted Pub Crawl

Nightly | 21+

Join the creatures of the night with a Sisters Grimm Haunted Pub Crawl for a 2.5-hour 21+ haunted pub crawl through San Antonio’s eeriest bars.

With ghost stories, haunted history, and chilling stops, this experience is equal parts spooky and spirited.

Nightly Spirits’ Booze and Boos Tour®

Tours Offered Year-Round | 21+

Costumed guides lead the way on this Booze and Boos® walking tour, starting at Maverick Whiskey.

Over 2.5 hours, you’ll sip cocktails from haunted bars and hear chilling tales of murder, legends, and restless spirits around downtown San Antonio.

RJA Ghost Tours

For a classic haunted history walk, join the RJA Ghost Tour.

Nightly at 9:00 PM, guides lead guests through San Antonio’s most haunted streets and sites, departing from the historic Crockett Tavern. Reservations required.

Plan Your Spooky Getaway

This Halloween, San Antonio comes alive after dark with haunted houses, pub crawls, and ghostly fun tailored for adults.

Whether you want to scream your way through theme parks or raise a glass with the spirits of the city, you’ll find plenty of thrills in the Alamo City.