Sept. 18, is National Cheeseburger Day. Here are the best deals at McDonald's, Burger King, Wendy's, and more.

Great Deals to Celebrate , National Cheeseburger Day. September 18 is National Cheeseburger Day. To mark the occasion, some of the nation's top burger chains are celebrating with special deals, 'Today' reports.

National Cheeseburger Day is back and plenty of restaurants are offering deals on, you guessed it, burgers. But it has a catch.

McDonald's has a fun deal to celebrate National Cheeseburger Day. On Wednesday, Sept. 18, the chain restaurant will sell double cheeseburgers for only 50 cents in celebration of the foodie holiday. Customers can take advantage of this deal by ordering through the McDonald's app.

Burger King will be offering members of its loyalty program, Royal Perks, a free cheeseburger deal to celebrate the occasion. While the deal is happening on the holiday itself, the chain is also launching a full week of other yummy freebies that are all valid with a purchase of $1 or more:

Burger King is offering free cheeseburgers to Royal Perks members on Sept. 18 in celebration of National Cheeseburger Day. The promotion kicks off a week of daily deals, including a free Whopper Jr. and discounts

Starting on National Cheeseburger Day, which is Sept. 18, customers can snag a 1-cent Jr. Bacon Cheeseburger with any purchase. The digital offer will be available to people placing orders on the Wendy’s app and is available through Sunday, Sept. 22