As of 2015, some ways to get a free breakfast at Denny's include visiting the restaurant on your birthday or on Veterans Day if you are a veteran, and watching for a Denny's promotion that involves giving away free breakfasts. Past free breakfast promotions at Denny's have typically involved getting a free original or make-your-own Grand Slam meal with eggs, pancakes, sausage and bacon. This meal is available around-the-clock at most Denny's locations.
As of December 2015, Denny's offers a free original Grand Slam breakfast to anyone who visits the restaurant on his birthday. The person needs to have valid identification specifying the day as his birthday to get the offer, and the recipient is still responsible for paying taxes on the meal and a gratuity. Not all Denny's locations participate in the free breakfast program, so it is best to call ahead to make sure a specific location is a participant.
On Veterans Day 2015, Denny's provided free breakfasts to all active, inactive and retired military personnel with appropriate identification who visited its restaurants. This was the make-your-own Grand Slam meal, which offers more options than the original Grand Slam. In the past, Denny's has had some promotions offering free breakfasts to all customers during specific time frames. These have been advertised on television. Keeping an eye out for future promotions is another way to possibly score a free breakfast.