Jamba is celebrating the start of summer with three days of deals, including the return of its annual $1 smoothie promotion for National Smoothie Day.
Running from June 20 through June 22, 2026, the "Kickoff to Summer" event offers discounted drinks and smoothies across the three-day weekend, with the biggest deal landing on Sunday, June 21.
On National Smoothie Day, guests can get a 16-oz Mango-A-Go-Go or Strawberry Whirl Smoothie for $1 at participating locations from 10:00 a.m. to 2:00 p.m. local time. The offer is available in-store only and limited to one smoothie per person while supplies last.
Jamba is also adding a sweepstakes element to the promotion. The first 100 guests at each participating location on June 21 will receive a Golden Ticket scratch-off card for a chance to win free smoothies for a year. Jamba says up to 50 winners nationwide will receive the prize.
The summer celebration starts on Saturday, June 20, with a $2 small Strawberry Lemon Twist Over Ice or the returning Watermelon Over Ice, which comes back for one day only. Both drinks are available in-store at participating locations.
The deals continue on Monday, June 22, when Jamba Rewards members can take $2 off any size smoothie purchased in-store or online.
Founded in 1990, Jamba operates more than 750 locations across 36 U.S. states and nine countries and territories.