Enjoy 99-cent corn dogs at Sonic Drive-In Sept. 17 and more...

Extra mustard and savings, please!

For bargain hunters, there’s nothing ever corny about saving money, especially when it means dining on the cheap. 

Image: Sonic Drive-In

Sonic Drive-In occasionally offers discounted corn dogs for one day only on select dates, typically holidays or other notable days. (Any add-ons are extra.) There’s usually no limit, so every family member can bite into a dog (or two) without breaking the bank.

If you want to be alerted when cheap corn dogs are available at Sonic Drive-In, sign up for the chain’s text updates.

UPDATE: Sonic Drive-In is offering corn dogs for just 99 cents on Sept. 17, 2025. The corn dogs are regularly $2.89, so it’s savings of 65%. Regular price may vary by location. 

There is no limit. No promo code or coupon necessary. The discount automatically applies at checkout — in-restaurant and online via Sonic’s site or app. 

No products found.

The popular fast-food chain also offers a daily Happy Hour from 2 p.m. to 4 p.m. — 50% off drinks and slushes. Even more delicious, bargain eaters can combine the two offers for maximum savings. (The bargain beverages are available all day via the Sonic Drive-In app.) 

Get the inside scoop on all of Sonic’s best deals in our roundup.

NOTE: Not all locations offer the same national promotions. As a result, price and participation may vary. It's always wise to call ahead for verification in your area. We strive to keep up with “limited-time offers,” but deals may end without notice.

Hungry for more food deals?

     

Hang out with Freddy on National Cheeseburger Day! Freddy’s Frozen Custard & Steakburgers is known for its juicy hamburgers. 

So, of course, it’s one of the best places to celebrate the cheesy day — especially because they’re offering one their most popular burgers for FREE. 

Photo: Freddy’s Frozen Custard & Steakburgers

From Sept. 18 to 21, 2025, Freddy’s Frozen Custard & Steakburgers is offering a FREE Original Double Steakburger with a $10 purchase at participating locations. 

An Original Double Steakburger is regularly $8.19. Price may vary by location. 

This meaty offer is only available for Freddy’s Rewards members via the Freddy’s app. Join Freddy’s Rewards here. 

Limit one per person. 

Find more National Cheeseburger Day deals here. 

Hungry for more food deals?

     

Say cheese! Cheeseburger lovers will definitely have something to smile about on National Cheeseburger Day, Sept. 18, 2025. One of the best places to celebrate the cheesy day is at McDonald’s.

Just about everyone has enjoyed one of the Golden Arches’ popular cheeseburgers. And, for one day only, bite into one at a bargain price in celebration of National Cheeseburger Day.

Photo: McDonald’s

On Sept. 18, 2025, McDonald’s is offering a Double Cheeseburger for just 50 cents at participating locations.

The offer is only available for MyMcDonald’s Rewards members via the McDonald’s app. Join MyMcDonald’s Rewards here. 

Limit one per person. 

Plus, don’t forget, customers can also enjoy FREE fries every Friday at McDonald’s through the end of the year. 

Love the Golden Arches? Get the best McDonald’s deals with our insider tips.

Find more National Cheeseburger Day deals here. 

Hungry for more food deals?

     

Burger King is treating its most loyal customers like true royalty by giving them FREE food for one week.

From Sept. 15 to 21, 2025, the popular fast-food restaurant is showing customers lots of appreciation (and savings!) with its Perks Week — a new daily deal for seven days. 

Image: Burger King

Each daily offer is only available online via the BK site or app at participating locations.

The offers are only available for Royal Perks members. Join Royal Perks here.

You must activate the deal in the “Offers” tab on the BK app or bk.com before placing your order.

Here’s what’s on the menu for the week:

Upsizes and modifications cost extra. 

Sept. 15, 2025 – FREE Hamburger with $1 minimum purchase

Sept. 16, 2025 – FREE Cini Minis with $1 minimum purchase

Sept. 17, 2025 – FREE Croissan’wich with $1 minimum purchase

Sept. 18, 2025 – National Cheeseburger Day: FREE Bacon Cheeseburger with $1 minimum purchase

Sept. 19, 2025 – FREE Whopper Jr. with $1 minimum purchase

Sept. 20, 2025 – FREE Cheeseburger with $1 minimum purchase

Sept. 21, 2025 – FREE Original Chicken Sandwich with $1 minimum purchase

Here’s how to redeem the daily deal:

Check the “Offers” tab in the BK app each day. Look for the daily “Perks Week” deal.

Choose “Add to Mobile Order” or “Redeem in Restaurant.”

Place your order only on the BK app and bk.com for order ahead or dine-in with the 6-digit “My Code” (where available) located in your account.

Plus, Burger King is giving its loyalty members FREE fries every week — through the end of 2025.

Hungry for more food deals?

     

Who can resist a cheeseburger? National Cheeseburger Day on Sept. 18, 2025, gives you permission to have more than one burger complete with melted cheese and all the toppings.

Restaurants join in the fun by offering some juicy deals on the cheesy day. Remember, local restaurants and other businesses may offer deals on this day, too — so check our Living on the Cheap network of sites for more offers. We’ll update this list as we find new offers, so keep checking back.

If you’re a burger fan, remember to look for National Hamburger Day deals on May 28, too!

Burger King

Get treated like royalty at Burger King on National Cheeseburger Day. 

On Sept. 18, 2025, the popular fast-food restaurant is offering a FREE Bacon Cheeseburger with a minimum purchase of $1. The giveaway is part of Burger King’s Perks Week celebration — from Sept. 15 to 21, 2025. 

And you can’t enjoy a burger without fries. Burger King is also offering FREE any size fries every week for its loyalty members through the end of 2025. (Unfortunately, the two offers cannot be combined in the same transaction.)

Dairy Queen

While it may not be cheeseburger-related, you can still enjoy (sweet) savings at DQ on National Cheeseburger Day.

From Sept. 8 to 21, 2025, the popular ice cream shop is offering a small Blizzard treat for just 85 cents with any purchase of $1 or more. Get details here. It’s the perfect opportunity to enjoy one of the seasonal fall flavors on the cheap. 

Enjoy the bargain Blizzard alongside one of DQ’s cheeseburgers! 

Freddy’s Frozen Custard & Steakburgers

Hang out with Freddy on National Cheeseburger Day!

From Sept. 18 to 21, 2025, Freddy’s Frozen Custard & Steakburgers is offering a FREE Freddy’s Original Double Steakburger with any $10 purchase.

This meaty offer is only available for Freddy’s Rewards members via the Freddy’s app.

McDonald’s

McDonald’s has been serving its popular cheeseburgers for 85 years, so it’s the perfect place to celebrate National Cheeseburger Day.

On Sept. 18, 2025, the fast-food giant is offering a Double Cheeseburger for just 50 cents. Limit one per person.

The cheesy deal is only available for MyMcDonald’s Rewards members. 

MOOYAH Burgers

On Sept. 18, 2025, MOOYAH Burgers is offering a FREE cheeseburger with the purchase of any other burger. 

Download the restaurant’s app (before Sept. 18) to qualify for the offer. 

MOOYAH Burgers has locations in 20 states. 

Smashburger

In honor of National Cheeseburger Day, Smashburger is offering a cheesy deal.

On Sept. 18, 2025, Smashburger is offering a any single Smash Burger for just $4.99, including ground beef, black bean, ground chicken and turkey. (Crispy chicken and brisket are excluded from the offer.) Any add-ons or extras are additional.

Be sure to mention the offer, when ordering in-restaurant. Use promo code BURGERDAY25 for online orders via the restaurant’s site or app.

There is no limit. 

Find participating locations here. 

• 47 ways to get free food at restaurants
• Birthday freebies from restaurants and retailers
• Save big with Wendy’s deals, menu specials and coupons
• Great deals at Sonic Drive-In
• Get the best McDonald’s deals with our insider tips