1/2 Price Footlongs at Sonic Feb. 2You’ll love the current Hot Deals, sorry you missed this deal. Celebrate Groundhog Day with 1/2 price footlongs all day at Sonic Monday, February 2! Plus, don’t forget 1/2 price drinks from 2-4 pm everyday. What’s your favorite way to top your footlong? I like a traditional coney dog. As always it’s a good idea to double check with your local SONIC Drive-In for participation.