Sonic happy hour time varies by location, but it usually runs from 2:00 PM to 4:00 PM. During Sonic happy hour time, customers can enjoy discounted drinks and slushies. Sonic happy hour time is the perfect opportunity to refresh yourself with a cold beverage at a lower price. https://www.feastandslumber.com/what-time-is-happy-hour-at-sonic-for-milkshakes/