It Entirely Depends upon the Haunt
On average, Haunted Attractions tend to last 20-30 minutes, but as many have mentioned, it entirely depends upon your selling ticket price. If you charge over $16-$20 for any one of your attractions, you should be expected to provide nearly 40-50 minutes of entertainment.
Our main attraction, the nationally famous, Niles Haunted House has over 100 possible routes creating near endless possibilities to our patrons and creating value. Although our show may only last anywhere between 15-25 min for this particular attraction, we only charge $10. In addition we offer a half priced discount for a repeat visit for a chance to walk through an alternate route. Very Popular!
It also depends upon if you offer an outdoor or indoor show. We also have what we call the "Field of Screams" and it could last you anywhere between 30 Minutes to nearly 1.5 hours! An outdoor maze, featuring a Chain Link Fence Maze, Claustrophobia, Multiple Themed Rooms, Birtch Tree Forest, Camophobia, a Bridge, and even a heartbeat tunnel! You'd have to see it to believe it! All for only $7!
Value is the Number one priority in pricing your event in relation to your attractions duration.
They Don't Wait Too Long.
Because I carry my doorbell in my pocket and it picks up the signal even underground in the wine cellar and even 4 blocks away (in a valley) where my wharehouse is located.
A wonderfull device!
I give waiting customers the choice of joining a tour in-progress and seeing the beginning at the ending (of their tour, a loop-tour) or waiting and beginning at the start.
Surprisingly most want the tour in-order, they must be "purists" for my art.