Burger King .25 Coffee through March 10th! February 19, 2013 by Jennie The links in the post below may be affiliate links. Read the full disclosure.Print Email Need an inexpensive caffeine boost when you’re out and about? Burger King is selling their small cups of coffee for only .25 through March 10th! This deal is good on both their hot and iced coffee and excludes flavors and whipped toppings.