Halloween planning at Walt Disney World got a little more urgent this week. September 4 has sold out for Mickey's Not-So-Scary Halloween Party, making it the first September date to become unavailable for the 2026 season and the eighth party night overall to disappear from Disney's ticket calendar, as of July 31.

The sellout carries some practical weight because of when it falls: the Friday before Labor Day weekend. That timing likely made it easier to slot into existing vacation plans than a mid-week date, which may explain why it went before the identically priced September 8 event — a Tuesday — which remained available. The cheapest remaining September option, September 1, was still on sale at $149 per adult ticket. Prices climb through the month, reaching $184 for September 29.

The other sold-out dates heading into August are August 7, 11, 14, and 18, along with October 9, 13, and 31 — the last being Halloween night itself, which was the first to go. Disney's full 2026 season runs August 7 through October 31, with 38 total party nights and standard adult prices ranging from $119 to $229 plus tax.

For guests who have already built September 4 into hotel stays, dining reservations, or transportation, the options are now to shift to another available date or skip the event. Each party night requires its own separate ticket — a regular Magic Kingdom ticket or a ticket for a different party night won't work. Parties run 7 p.m. to midnight, with ticket holders allowed into the park starting at 4 p.m., and include seasonal offerings like Mickey's Boo-to-You Halloween Parade, trick-or-treating, and character appearances. New for 2026 is a Tomorrowland masquerade featuring Stitch, Lilo, and Angel.

Anyone with a fixed vacation window should check Disney's live ticket calendar directly, since availability can change at any time. This story is based on reporting from Disney Fanatic.