I recently visited Seaworld with my family.  Because I am always searching for discounts, I uncovered a pretty easy way to save 20% on admission.  Just bring your Southwest Airlines Frequent Flier card and flash it at the ticket window.  If you don't have one, sign up on the Southwest Airlines website.  It is completely free, and you can print the card immediately after signing up.

And, children under three years old are free at Seaworld.

See the link below: