National Coffee Day 2024 Dunkin. The chain is giving out a free medium hot or iced coffee with. Dunkin’ is offering members of its loyalty program, dunkin’ rewards, a free medium hot or iced coffee with any purchase on friday.

On thursday, september 29, dunkin’ loyalty members can sip a free medium hot or iced coffee with any purchase*! Some of the deals include a free medium hot or iced coffee with any purchase for dunkin’ donuts (limit one per member);