Half-Price Shakes Today! Now every Monday thru December 16th, Sonic is offering half-price shakes! Excludes Red Velvet Cake Batter Shake and not valid with combos, delivery or any other offers. The ...

Sonic Drive-In is bringing back Watermelon and Lemonberry Slushes for a limited time due to popular demand. The fast-food chain is also introducing Cheesy Garlic Pepperoni Bites. Half-price shakes are ...