May 28, 2012 No Comments $1 Smoothies and Frappes at Burger King (5/26-28) This weekend only (May 26-28) get 12 oz Smoothies and Frappes at Burger King for only $1. Not valid in AK and HI. $1 Smoothies and Frappes at Burger King (5/26-28) -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.