Denny’s Restaurant Coupon – Save 20% on Breakfast – Expires Oct 10 Posted on September 11, 2009 by Restaurant Deals Leave a comment Get 20% off your entire Denny’s bill. Just print the coupon and bring it to a Denny’s restaurant. Denny’s 20% Coupon expires on October 10, 2009. Related posts: Restaurant 2012 Holiday Gift Card Bonus Roundup Free Fusion Favorite at Denny’s Restaurant Veterans Day Restaurant Deals Roundup – 2012 Red Robin 2 Free Bottomless Beverages Denny’s 20% off Entire Check – through July 22nd Leave a comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.