Customers can get Denny's coupons through joining Denny's Diner Perks program, being a member of an organization like the AARP or searching for coupons on RetailMeNot and similar sites. Denny's also runs regular promotions for parents to save on their children's meals, notes RetailMeNot.
Denny's Diner Perks program leads to Denny's cash for each visit, and customers can use the cash for money off future orders, notes Denny's. Another perk of the program is a coupon for a Grand Slam for signing up.
Retirees can use their AARP memberships to get money off their orders, while parents can visit during a certain time of the week for their children to eat free, suggests DealsPlus. Coupons for these and other offers are on the Denny's pages on DealsPlus and RetailMeNot.