This Sunday, September 19th, is National Cheeseburger Day! McDonald’s is celebrating the big day with a free Double Cheeseburger with a $1 purchase – valid for in-app purchases only.
Burger King Royal Perks members can order a FREE cheeseburger with a minimum purchase of $1 at bk.com or via the Burger King app from Sept. 17 to 19.
