COSI promo codes

4 COSI codes are on file. None has passed a checkout test yet, so try them before you count on the saving.

Codes listed
4
Verified
0
Sitewide
0
Last checked
Oct 14, 2026

Unverified codes

Listed as found; some may have ended

  1. 25% Off

    Not verified

    25% Off Select Tickets at COSI

    • 25% off your order
    • Applies to: Select items

  2. $37 Off

    Not verified

    $37 Off Columbus Metropolitan Club at COSI

    • Applies to: Select items

  3. Free Shipping

    Not verified

    Free Shipping On Catering Orders at COSI

    • Applies to: Select categories

  4. SALE

    Not verified

    Special Savings Special Offers Just For Cosi Members at COSI

    • Applies to: Select items

How to use a COSI code

  1. Show and copy the code

    Start with a verified code. The code opens in a new tab and this tab continues to COSI.

  2. Fill your bag at COSI

    Add the items the code applies to. Sale items and some brands are often excluded.

  3. Paste it at checkout

    Enter the code in the promo field before you pay. If the total does not change, try the next code.

Questions about COSI codes

Does COSI have a working promo code right now?

We list 4 COSI codes, but none has passed a checkout test yet. Treat them as unconfirmed and try the first one listed.

What is the best COSI promo code today?

The strongest offer we have on file is “25% Off Select Tickets at COSI”. It has not been verified, so it may not apply to every basket.

Do COSI codes work on everything?

None of the current codes is described as sitewide. Most COSI codes apply to selected items, a minimum spend or new customers, so check the terms listed under each code.

How do I use a COSI promo code?

Select “Show code” on this page and copy the code, add your items to the bag at COSI, and paste the code into the promo or discount field at checkout before you pay. The order total should update straight away; if it does not, the code does not apply to your basket.

Why did my COSI code not work?

The usual reasons are an expired code, sale items that are excluded, a minimum spend that has not been reached, or a code limited to first orders. Codes marked “Verified” were accepted at checkout on the date shown; unverified codes are listed as found and may already have ended.

Codes are collected from public sources and re-checked on a rolling schedule; retailers can end an offer at any time. InfluencerRate may earn a commission when you shop through links on this page.