As is their annual tradition, Sonic Drive-In presents Tax Day Happy Hour all day on April 15th! Those famous Sonic Cheeseburgers will be available for just half the regular menu price throughout the entire day. Stop in to enjoy some much needed “tax relief” with a cheeseburger at 50% off on Tax Day!
Offer valid only on Monday, April 15, 2019 at participating restaurants. Single patty cheeseburgers only. Excludes double patty burgers, Jr. Deluxe Cheeseburgers, and Jr. Double Cheeseburgers. Not valid in conjunction with any other coupon or special promotional discount. Most Sonic Drive-In locations will be open regular hours on Mother’s Day (Sunday, May 12) and open holiday hours on Memorial Day (Monday, May 27.)