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kenmikec 11.2K Views
Sep 17, 2026 6:30 AM

Jack in the Box Restaurant: National Cheeseburger Day Offer: Jr. Cheeseburger

Free w/ Any $1+ Purchase

(Valid 9/18 Only)at Jack in the Box
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Deal Details
Jack in the Box [Restaurant Locator] is celebrating National Cheeseburger Day and offering Jack in the Box Jack Pack Members [Free to Join]: Free Jack in the Box. Jr. Cheeseburger w/ Any $1+ Minimum Purchase when you redeem the offer in your rewards account valid at participating locations only for September 18, 2026.

Thanks to community member kenmikec for finding this deal

Note, must redeem the offer in your account for promotional offer/discount to apply

Editor's Notes

Written by Discombobulated | Staff
  • About the Deal
    • Offer includes one free Jack in the Box Jr. Cheeseburger with a subtotal greater than or equal to $1 (subtotal minimum does not include the item eligible for discount)
    • Offer valid on mobile app orders only (must redeem the offer in the 'offers' page on the Jack in the Box app before placing an order)
    • Limit one time use only/order
    • Offer not valid with any other rewards or offers
    • Offer valid only for September 18, 2026 or while promotional offer last
  • Additional Details
    • Additional terms/conditions may apply

Original Post

Written by kenmikec
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Jack in the Box [Restaurant Locator] is celebrating National Cheeseburger Day and offering Jack in the Box Jack Pack Members [Free to Join]: Free Jack in the Box. Jr. Cheeseburger w/ Any $1+ Minimum Purchase when you redeem the offer in your rewards account valid at participating locations only for September 18, 2026.

Thanks to community member kenmikec for finding this deal

Note, must redeem the offer in your account for promotional offer/discount to apply

Editor's Notes

Written by Discombobulated | Staff
  • About the Deal
    • Offer includes one free Jack in the Box Jr. Cheeseburger with a subtotal greater than or equal to $1 (subtotal minimum does not include the item eligible for discount)
    • Offer valid on mobile app orders only (must redeem the offer in the 'offers' page on the Jack in the Box app before placing an order)
    • Limit one time use only/order
    • Offer not valid with any other rewards or offers
    • Offer valid only for September 18, 2026 or while promotional offer last
  • Additional Details
    • Additional terms/conditions may apply

Original Post

Written by kenmikec

Community Voting

Deal Score
+122
Good Deal
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Top Comments

IronProdigy
69Comments
10Reputation
You could have literally googled that question
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15 Comments

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Sep 17, 2026 12:11 PM
703 Comments
Joined Jul 2019

This comment has been rated as unhelpful by Slickdeals users.

Sep 17, 2026 12:17 PM
69 Comments
Joined Nov 2017
IronProdigySep 17, 2026 12:17 PM
69 Comments
Quote from RGon View quoted comment :
Is the national cheeseburger Day an official national day or is it just a marketing thing from this restaurant?
You could have literally googled that question
2
Sep 17, 2026 12:24 PM
703 Comments
Joined Jul 2019

This comment has been rated as unhelpful by Slickdeals users.

Sep 17, 2026 1:31 PM
97 Comments
Joined Aug 2020
OliveGorilla122Sep 17, 2026 1:31 PM
97 Comments
I don't see a master deal list. Jack is also adding a doube cheeseburger day? How about a square cheeseburger day? Bottomline where are the deals? I guess you'll have to search burger or cheeseburger for deals around 18 September.

Remember, everyday is National Deals Day.
Sep 17, 2026 2:50 PM
575 Comments
Joined Aug 2011
nutriapeludaSep 17, 2026 2:50 PM
575 Comments
I don't see any of the deals that are supposed to be activated so far in my app in west Texas, hopefully they will feel the pressure tomorrow and do that one atleast.
Sep 17, 2026 3:03 PM
387 Comments
Joined Nov 2016
Kplan23Sep 17, 2026 3:03 PM
387 Comments
https://www.usatoday.com/story/mo...1459117007
Last edited by Kplan23 September 17, 2026 at 08:12 AM.
Sep 17, 2026 8:00 PM
858 Comments
Joined Feb 2012
SeaArachnidSep 17, 2026 8:00 PM
858 Comments
Quote from RGon View quoted comment :
Is the national cheeseburger Day an official national day or is it just a marketing thing from this restaurant?
Apparently it's sort of real, but the backstory is ridiculous. It started in the 50s as "National Ground Beef Preparedness Day" during the Cold War because there was this weird concern about keeping the country supplied with beef if Soviet blockades disrupted food imports.

Then sometime in the 70s restaurants basically realized nobody was going to get excited about "Ground Beef Preparedness Day" and started calling it National Cheeseburger Day instead. Eventually that name just took over.

So the restaurant didn't make it up. But restaurants did basically hijack an obscure Cold War beef holiday and turn it into a reason to sell cheeseburgers.
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Sep 18, 2026 8:54 AM
4.7K Comments
Joined Aug 2015
SlySolSep 18, 2026 8:54 AM
4.7K Comments
Quote from SeaArachnid View quoted comment :
Apparently it's sort of real, but the backstory is ridiculous. It started in the 50s as "National Ground Beef Preparedness Day" during the Cold War because there was this weird concern about keeping the country supplied with beef if Soviet blockades disrupted food imports.

Then sometime in the 70s restaurants basically realized nobody was going to get excited about "Ground Beef Preparedness Day" and started calling it National Cheeseburger Day instead. Eventually that name just took over.

So the restaurant didn't make it up. But restaurants did basically hijack an obscure Cold War beef holiday and turn it into a reason to sell cheeseburgers.
I'm always kind of curious about the weird little back-stories, but after I couldn't come up with much about it from standard Google searches, I pasted the story in to Google and asked about it. Sounds like it's not real, despite being a fun little story. https://share.google/eZh2qCwLYCx376ohj
Last edited by SlySol September 18, 2026 at 02:13 AM.
1
Sep 18, 2026 2:25 PM
604 Comments
Joined Jun 2008
tooquickSep 18, 2026 2:25 PM
604 Comments
Quote from RGon View quoted comment :
Is the national cheeseburger Day an official national day or is it just a marketing thing from this restaurant?
It's a federal holiday. Most workers have the day off to celebrate.
3
Sep 18, 2026 2:52 PM
2.6K Comments
Joined Jan 2013
tonkotsuSep 18, 2026 2:52 PM
2.6K Comments
Their value/Jr size burgers are a joke and the workers at locations near me don't give a crap
Sep 18, 2026 6:24 PM
13K Comments
Joined Oct 2007
arribasnSep 18, 2026 6:24 PM
13K Comments
Nothing less than $2 at my jack, even 2 tacos
1
Sep 18, 2026 8:10 PM
23.3K Comments
Joined May 2010
deedz2Sep 18, 2026 8:10 PM
23.3K Comments
Thx, tu and shared. None near me.
Sep 18, 2026 10:26 PM
299 Comments
Joined May 2008
toothandnailSep 18, 2026 10:26 PM
299 Comments
Almost worth a trip to the local stab in the box.
Sep 18, 2026 11:42 PM
38 Comments
Joined Feb 2025
sifoolSep 18, 2026 11:42 PM
38 Comments
Geee...so generous. Maybe I'll spend $5 in gas to get this HUUUUUGGGGEASSSS POS.
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Sep 19, 2026 3:16 AM
8.1K Comments
Joined Mar 2005
flangomangoSep 19, 2026 3:16 AM
8.1K Comments
Their burgers are so crappy and nasty and awful
1

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