Cheeseburger Day event features rich promotions…free, $1, BOGO, and more Major burger chains are participating Today (the 18th), in celebration of National Cheeseburger Day, leading fast-food chains are offering a variety of discount promotions. McDonald’s is offering a free Double Cheeseburger to Reward members who spend $1 or more via the app today. Burger King is running a different daily promotion until the 20th: On the 18th, get a free Bacon Cheeseburger with any purchase of $3 or more; on the 19th, receive four free Chicken Nuggets; on the 20th, enjoy a free Original Chicken Sandwich. Wendy’s has partnered with the delivery platform Grubhub: Order $20 or more today to receive a free “Baconator,” featuring bacon and a beef patty. Five Guys is running a “Buy One, Get One Free” promotion: When you purchase one burger, you get another free. Orders must be placed via the app or website for pickup or direct delivery; simply add two burgers to your cart and enter the promo code “BOGOBURGER” at checkout. Jack in the Box is offering a free Junior Cheeseburger to customers who spend $1 or more via the app. Note: All promotions require enrollment in rewards programs or app-based ordering.