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Tricks and Treats 2026 at Six Flags Discovery Kingdom: crowd calendar

19 Sep to 1 Nov 202614 datesVallejo, California, United States

Tricks and Treats 2026 at Six Flags Discovery Kingdom runs 19 Sep to 1 Nov 2026 and is forecast busy, averaging 69% crowd level. The quietest date is Sun 20 Sep at 61%, the busiest Sat 17 Oct at 79%.

Quietest date of Tricks and Treats 2026

Sunday 20 Sept

Tricks and Treats 2026 is forecast busy at Six Flags Discovery Kingdom, averaging 69% crowd level across its 14 dates. The busiest is Saturday 17 Oct at 79%.

61%crowds
Next bestSun 27 Sep 61%Sun 1 Nov 61%Sun 4 Oct 65%

Across its 14 dates the forecast averages 69% crowd level, which is busier than a normal day here. Expect lines to average around 30 minutes park-wide on a typical date.

Every date, with the forecast

September 2026

  1. Sat1972%~32 min
  2. Sun2061%~24 min
  3. Sat2672%~32 min
  4. Sun2761%~24 min

October 2026

  1. Sat371%~32 min
  2. Sun465%~27 min
  3. Sat1075%~36 min
  4. Sun1170%~30 min
  5. Sat1779%~41 min
  6. Sun1868%~29 min
  7. Sat2474%~36 min
  8. Sun2567%~28 min
  9. Sat3171%~31 min

November 2026

  1. Sun161%~24 min

The 30 days inside the run that Tricks and Treats does not operate on are forecast 23% on average, quieter than the event dates.

Quietest 0-15%Quieter 15-35%Typical 35-65%Busier 65-88%Busiest 88-100%

Dates as published by Six Flags Discovery Kingdom; always check the park's own site before travelling. Crowd levels are modelled from this park's own recorded queue times, school and public holidays, day of the week and the weather forecast, and may not always be right. We score every past forecast against what the queues actually did and publish the result in the crowd forecast accuracy ledger.

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Frequently asked

When is Tricks and Treats 2026 at Six Flags Discovery Kingdom?

Tricks and Treats 2026 runs 19 Sep to 1 Nov 2026, on weekends: 14 dates in total. Dates are as published by Six Flags Discovery Kingdom.

What is the quietest date of Tricks and Treats 2026?

Sunday 20 Sept is forecast the quietest at 61% crowd level. The next best are Sun 27 Sep (61%), Sun 1 Nov (61%), Sun 4 Oct (65%).

What is the busiest date of Tricks and Treats 2026?

Saturday 17 Oct is forecast the busiest at 79%. The 3 dates that fall in the October break (17 Oct to 25 Oct) average 73%.

How busy is Tricks and Treats compared with a normal day at Six Flags Discovery Kingdom?

The event dates average 69% crowd level, busier than a normal day here. The 30 days inside the run that Tricks and Treats does not operate on are forecast 23% on average, quieter than the event dates.