Sonic Drive-In Happy Hour Any Time promo: 50% off drinks & slushes in the app
For a limited time, enjoy the Sonic Drive-In Happy Hour Any Time Promo: Just use the Sonic App (available for free on Google Play and App Store) to order ahead and save 50% on drinks and slushes! Don’t miss out and refresh yourself. See the app for more details. Offer valid for a limited time only. Some exclusions may apply.