Sonic: $1 Hot Dogs All Day Long (3/16) March 15th, 2016 By Nicole This post may contain affiliate links, which means I will make a small commission if you click and make a purchase. Tomorrow only (3/16) Sonic will be offering Hot Dogs for $1 each (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!