Getting your $1 hot dog at Sonic TODAY! All you have to do is head over to your local Sonic and order an All-American Dog or a Chili Cheese Coney. Both items will be available for, yup, $1 on Thursday (Aug. 29). Each customer is limited to five hot dogs! You can skip the line, as well, by downloading Sonic's app. Guests who order their $1 hot dogs on the app will also be rewarded with a half-price drink or slushie.