National Cheeseburger Day is an annual celebration held on 18th September, dedicated to the iconic American cheeseburger. In the UK, while the day may not be as widely observed as in the United States, numerous restaurant chains and food outlets participate by offering special deals, discounted items, and freebies to mark the occasion. These promotions typically run for a limited period, often spanning several days around the 18th of September. The offers are designed to attract customers and generate buzz, ranging from buy-one-get-one-free (BOGO) deals to significant discounts on specific menu items. For UK consumers, this presents an opportunity to enjoy popular fast-food and casual dining options at reduced prices.
The types of deals available on National Cheeseburger Day are varied. Common promotions include discounted cheeseburger meals, BOGO offers on selected burgers, and complimentary items with a purchase. Some brands may offer free cheeseburgers with a minimum spend, while others provide price reductions on their signature burgers. It is important to note that many of these deals are tied to specific conditions, such as requiring a purchase, being available only to members of a restaurant's loyalty programme, or being exclusive to certain ordering methods like in-app purchases or online orders. The validity of these offers is usually limited to the day itself or a short window around it, and they are often subject to availability and participation of individual restaurant locations.
Key UK Participating Brands and Their Offers
Based on the available source data, several major international burger chains and restaurants that operate in the UK have been highlighted for their National Cheeseburger Day 2025 promotions. It is crucial to understand that the specific details, such as prices and exact terms, are derived from the provided sources and may be subject to change. The following information summarises the offers as reported, with a focus on their structure and eligibility requirements.
Applebee’s Applebee’s is offering a deal where customers can enjoy one of three Classic Handcrafted Burgers (Classic Cheeseburger, Classic Bacon Cheeseburger, or Classic Burger) plus Classic Fries for £8.99. This offer is valid for dine-in, takeaway, online, and app orders. The promotion is scheduled to run from 18th to 21st September 2025. This deal provides a bundled meal at a fixed price, making it a straightforward value proposition for customers seeking a complete burger and fries combination.
Burger King Burger King’s promotions for National Cheeseburger Day are linked to its Royal Perks loyalty programme. For members, a key offer is a free Bacon Cheeseburger with a £1 purchase. This deal is valid through the Burger King app or website at participating locations. Additionally, another report indicates that Royal Perks members can enjoy a free cheeseburger with a purchase of £1 or more. The validity for these member-specific deals is reported to run from 18th to 21st September. These offers highlight the importance of app-based loyalty schemes for accessing exclusive freebies.
McDonald’s McDonald’s is featuring a deal for Double Cheeseburgers at £0.50. This offer is exclusively available via the McDonald’s app and is limited to one per customer. The promotion is valid on the day of 18th September. This type of app-only, single-use discount is a common strategy to drive downloads and engagement with the brand’s mobile platform.
Sonic Drive-In Sonic’s promotion involves a buy-one-get-one-free (BOGO) offer on Double Sonic Smasher burgers. This deal is accessible through the Sonic app. Another source mentions a BOGO deal for Double Smasher and Jr. Deluxe Cheeseburger for £1.99 via the app. These app-only deals encourage digital ordering and customer loyalty.
Buffalo Wild Wings Buffalo Wild Wings offers a BOGO free burger deal for members of its Blazin’ Rewards programme. This promotion is valid on dine-in, takeout, and delivery orders. The offer is applicable when a rewards member buys a burger on National Cheeseburger Day, receiving a second burger of equal or lesser value for free. This deal is tied directly to the brand’s rewards membership.
Whataburger Whataburger’s deal provides a free order of fries or onion rings with the purchase of a #5 Bacon & Cheese Whataburger. This offer is valid on 18th September only and can be redeemed via the Whataburger site or app. It is a complementary item offer, adding value to a specific burger purchase.
Dairy Queen Dairy Queen’s promotion is available to DQ Rewards members, offering a free Double Original Cheeseburger Stackburger with a £1 purchase. This deal is valid for app and online orders. Similar to other brands, access to this freebie requires membership in the restaurant’s rewards programme.
Smashburger Smashburger is offering any single Smashburger for £4.99 on 18th September at participating locations. This is a direct price reduction on a core menu item, providing a simple and attractive discount.
Checkers & Rally’s Checkers & Rally’s is running a promotion from 16th to 18th September, offering its signature Big Buford burger for £3 at participating locations, while supplies last. This is a time-limited, discounted price on a specific item.
Portillo’s Portillo’s is offering Perks members 50% off cheeseburgers or hamburgers. This discount is valid now through 21st September 2025. The deal is exclusive to members of the Portillo’s Perks loyalty programme.
Carl’s Jr. Carl’s Jr.’s deal allows customers to enjoy half-priced Western Cheeseburgers when ordering a large beverage through the app. This offer combines a discount on a burger with a purchase requirement (a large beverage) and an app-based ordering condition.
Del Taco Del Taco’s Del Yeah Rewards members can take advantage of a BOGO free Double Del Cheeseburger deal, running all day on 18th September. This offer is exclusive to loyalty programme members.
Bad Daddy’s Burger Bar Bad Daddy’s Burger Bar is offering a Double Classic Smash Burger with a choice of a classic slide for £10 on 18th September. This offer is available for dine-in customers and those ordering from the chain’s website or app.
BJ’s Restaurants & Brewhouse BJ’s is offering an All American Smash Burger with a personal-size signature Pizookie for £13. This is a bundled meal deal combining a burger and a dessert.
Buffalo’s Café / Hurricane Grill & Wings Buffalo’s Café and Hurricane Grill & Wings are offering a free Pepsi when a customer buys a cheeseburger on 18th September. This is a complementary drink offer with a purchase.
Native Grill & Wings Native Grill & Wings is offering a Bacon Cheeseburger for £10 when dining in or ordering online using the code ‘Cheese2025’. This is a discounted price with a specific promo code.
The Melt The Melt is giving 1,000 rewards members a free MeltBurger with no purchase necessary. Additionally, all rewards members who buy a MeltBurger on 18th September will earn a bonus MeltBurger reward. This offer has a limited free allocation and a subsequent reward for purchasers.
Wahlburgers Wahlburgers is offering 50% off all burgers at participating North American locations on 18th September. This single-use offer cannot be combined with other deals and is valid in-store and online. It excludes certain items like triples, sandwiches, and Smahlburgers.
Wayback Burgers Wayback Burgers has a deal for customers on 18th September, though the specific details from the source are incomplete. The offer likely involves a discount or promotion on their burgers.
Other Notable Mentions Other brands mentioned in the source data include: * McDonald’s: A separate deal for Double Cheeseburgers for £0.50 via the app. * Jack in the Box: Deals running from 12th to 18th September, including a Smashed Jack for £5 and BOGO Jr. Cheeseburgers on 15th September (National Double Cheeseburger Day). * Red Robin: Red’s Double Tavern Burger with bottomless sides & beverage from £9.99, dine-in only. * STK Steakhouse: Cheeseburger for £9.99. * Sullivan’s Steakhouse: Signature Angus Burger with garlic fries for £15 between 3–6 p.m. on 18th September. * Tender Greens: Free beverage with any burger purchase. * The Greene Turtle: BOGO cheeseburger deal for dine-in customers. * Wahlburgers: 50% off all burgers.
Eligibility, Conditions, and Important Considerations
Accessing these National Cheeseburger Day deals typically involves specific conditions that consumers must meet. Understanding these requirements is essential for successfully claiming an offer.
Loyalty Programme Membership A significant number of the best deals, particularly freebies, are exclusive to members of a restaurant’s loyalty or rewards programme. For example, Burger King’s free Bacon Cheeseburger requires Royal Perks membership, Dairy Queen’s free burger requires DQ Rewards membership, and Buffalo Wild Wings’ BOGO deal is for Blazin’ Rewards members. Consumers interested in these offers should ensure they are registered and logged into the relevant app or website before attempting to redeem them.
App-Based and Online Ordering Many promotions are restricted to orders made through the restaurant’s official mobile app or website. Deals like McDonald’s £0.50 Double Cheeseburgers, Sonic’s BOGO offers, and some of Burger King’s promotions are explicitly stated as app-only. This strategy helps brands gather customer data and streamline order processing. Customers without the app may miss out on these specific deals.
Minimum Spend and Purchase Requirements Several offers come with a minimum spend or purchase requirement. For instance, a free burger might be contingent on spending £1 or more, as seen with Burger King and Dairy Queen’s offers. Other deals require the purchase of a specific item, such as a large beverage at Carl’s Jr. or a #5 Bacon & Cheese Whataburger to get free fries. It is important to check the exact terms for each offer.
Time and Date Restrictions Most deals are valid only on 18th September 2025, though some extend for a few days. Jack in the Box’s promotion runs from 12th to 18th September, Applebee’s from 18th to 21st, and Portillo’s from now through 21st September. Offers like Sullivan’s Steakhouse’s discounted burger are only available during a specific time window (3–6 p.m.). Consumers must note the precise validity period to avoid disappointment.
Participating Locations and Availability Not all restaurant locations may participate in these national promotions. The sources frequently mention "participating locations only" or "while supplies last." It is advisable to check with your local branch or the brand’s website for confirmation before visiting. Limited-time offers, especially those with a free component (like The Melt’s 1,000 free burgers), may run out quickly.
Geographic Limitations The provided source data is focused on deals in the United States. While many international chains like Burger King, McDonald’s, and Applebee’s have a presence in the UK, the specific offers, prices (£ vs $), and terms may differ. UK consumers should verify directly with the UK branches of these brands for their National Cheeseburger Day promotions. The deals listed in the sources are based on US pricing and availability.
Ordering Methods Offers are often valid for dine-in, takeaway, online, and delivery orders. However, some deals are restricted to specific methods. For example, Red Robin’s offer is dine-in only, while others like Applebee’s are valid across multiple channels. The required ordering method (app, website, in-store) is a critical detail to confirm.
Maximising Your Deal-Seeking Strategy
To effectively take advantage of National Cheeseburger Day offers, consumers can adopt a few practical steps. First, it is beneficial to download the mobile apps of preferred burger chains ahead of time. Many exclusive deals are app-only, and registration may be required for loyalty programmes. Second, checking the official social media channels or websites of these brands a few days before 18th September can provide the most up-to-date information on participating locations and specific terms. Third, always read the fine print associated with any offer. Key details to look for include the validity period, any minimum spend requirements, whether the offer is for new or existing customers, and if it can be combined with other promotions. Finally, given that many deals are limited by time or quantity, planning ahead and being prepared to order early on the day can increase the chances of securing the best offers.
Conclusion
National Cheeseburger Day on 18th September 2025 presents a notable opportunity for consumers to access discounted meals and freebies from a variety of popular restaurant chains. The available promotions range from simple price reductions on burgers to complex loyalty-based freebies and BOGO deals. A common thread across many offers is the emphasis on digital engagement, with app-based ordering and loyalty programme membership being key to unlocking the most attractive deals. However, consumers must be mindful of the specific conditions attached to each promotion, including eligibility requirements, time restrictions, and participating locations. As the offers are primarily based on US data, UK consumers should verify details with local branches. By understanding the structure of these deals and planning accordingly, consumers can make informed decisions and enjoy the celebration without overspending.