Cheeseburgers are always good, but somehow they taste better on a summer day hanging out with friends and family. On July 21, 2016, SONIC Drive-In is celebrating summer by offering cheeseburgers at half-price at participating locations. The burgers are prepared with 100% pure beef, cheese and fresh ingredients — all made to order. (If you don’t like cheese, just order one without the cheese and you can still salivate over the savings.) There’s no limit, so everyone in your family can chomp on a “cheap” cheeseburger. For locations, click here.