Fire up the grill!
Sunday is National Cheeseburger Day, and to celebrate, a number of restaurants are offering special promotions.
Here are just a few of the restaurants offering up free or discounted cheeseburgers (fries not included).
STK: At STK in Dupont Circle, customers who buy a Lil' BGR will get a free one.
Ruby Tuesday: The national chain is offering customers who but an entree a free burger. But there's a catch! You must be joined the restaurants "So Connected" email club.
Burger-Fi: Customers can snag a double cheeseburgers for just $5.
Delta Airlines: Hitting the friendly skies Sunday? If you're flying with Delta Airlines from New York's John F. Kennedy International Airport to Los Angeles International Airport, you can get a burger from Shake Shack during your flight.