Sonic: $0.50 Corn Dogs All Day Long! This post may contain affiliate links. Please see my full disclosure policy for details. August 27, 2015 27 Aug Pin0Share0TweetGoogle+0shares Today, August 27th, you can get corn dogs for just $0.50 each at Sonic! Best of all – no coupon or code is required! Keep in mind that this offer is available only at participating locations (so make sure you ask before you order).