Thumb Score: +8 The next Starbucks® Happy Hour is Thursday, September 27. Valid at all participating Starbucks - including Tall-sized SB's inside grocery stores, Tar-j When you buy any handcrafted espresso beverage or Frappuccino® blended beverage, size grande or larger, GET ONE FREE starting at 3 p.m. Order through mobile app OR tell code to your barista: 3508 Offer valid 9/27 only after 3 p.m.