This archived St. Patrick’s Day promotion was active previously but has NOT been confirmed for 2025. I will keep watching to see if it or a similar offer returns. As soon as I receive further information, this page will be updated. Be sure to check back often!
Sonic Drive-In is celebrating St. Patrick’s Day with 1/2 price ice cream shakes! Choose from 23 shakes and pay just 50% of the regular price. No coupon is required to take advantage of this offer. Just show up on Thursday and tell ’em you want your half price Sonic St. Patrick’s Day shake!
Offer valid only on Thursday, March 17, 2016 at participating Sonic Drive-In restaurants. Most locations will be open regular hours on St. Patrick’s Day and open holiday hours on Easter Sunday, March 27.