Sonic: Half-Price Shakes All Day This Thursday (6/18/15)
Sonic is celebrating summer by offering half-price shakes all day this Thursday, June 18th! No coupon necessary. Stop by any participating Sonic Drive-In and treat the whole family!
This is valid at participating locations and hours may vary, so I’d recommend calling your store before heading out. Find a Sonic near you here.
Don’t forget you can also get half-price shakes at Sonic every day after 8 pm all Summer long!