Monday, September 29, 2014, is National Coffee Day. To celebrate, Dunkin’ Donuts is offering free coffee on National Coffee Day.
Guests can walk into any participating Dunkin’ Donuts restaurant in the U.S. and receive a free medium cup of Dunkin’ Donuts hot Dark Roast Coffee, with a limit of one per guest.
Then, beginning September 30 through October 5, guests can enjoy a medium cup of Dunkin’ Donuts hot Dark Roast Coffee for the special price of only 99 cents.