Sonic: $0.50 Corn Dogs All Day Long (5/23) May 22nd, 2019 By Nicole Leave a Comment This post may contain affiliate links, which means I will make a small commission if you click and make a purchase. Tomorrow only (5/23) Sonic is offering Corn Dogs for $0.50 all day long! There are no coupons required to snag this deal. (You may want to check with your Sonic before you head out to make sure they are participating). Enjoy!