Admission

The cost of admission at worlds of fun will vary depending on several things. This cost of admission changes  because of when you want to go, how long you want to go, or the time of day that you are going. There are several different tickets you can purchase. There are also season passes available. The different tickets include Single Day(have regular and junior/senior tickets); Pay Once, Visit Twice(also have regular and junior/senior tickets); Twilight (sunday-friday); Twilight (saturday); and then season passes. Regular tickets are for guests that are 48 inches or taller. Junior/senior tickets are for guests who are under 48 inches or are over the age of 63.

http://www.worldsoffun.com/public/admission/prices/index.cfm