Dunkin donuts free coffee promo code

On 22 September 2026, Dunkin' officially announced a new promotional campaign aimed at its DD Perks and Rewards members to celebrate the arrival of the autumn season. The latest offer provides registered users with a unique promo code that grants a free medium hot or iced coffee with any food purchase made through the mobile application. This initiative is part of the company's ongoing strategy to drive digital engagement and incentivize customers to utilize their mobile ordering platform. The promotion is valid at participating locations nationwide and is scheduled to run through the end of the month. To redeem the offer, customers must activate the specific code within the "Offers" tab of the Dunkin' app before placing their order. Company representatives noted that this seasonal push is designed to reward loyal patrons while highlighting their expanded fall menu, which includes new pumpkin-flavored bakery items and signature espresso beverages. The promotion is limited to one redemption per account holder per day throughout the duration of the event.