Half-Price Starbucks Frapps May 4-13 Expired May 012012 Participating Starbucks shops are featuring a promotion for Frappuccinos. The Frappuccino blended beverages are available for half price 3 p.m. to 5 p.m. May 4 to 13. It’s Frappuccino Happy Hour. If you enjoyed this post, make sure you subscribe to my RSS feed! If you're new here, you may want to subscribe to our free daily newsletter. Thanks for visiting! Sorry, the comment form is closed at this time.