Delta and Shake Shack have teamed up to offer Amex Delta cardholders in New York free Shake Shack. This a limited offer, which runs now through September 24, 2017.

Here’s how it works: 

• What better way to kick off National Cheeseburger Day than with free Shake Shack from #DeltaAmexPerks?
  Here’s how to enjoy your choice of burger, chicken sandwich or flat-top dog:
• Click “Get Offer” and enter your SkyMiles number to register. You’ll receive a confirmation email with your unique voucher.
• Present your voucher at a participating Shake Shack location in New York City anytime today, September 18th, through Sunday, September 24th.
• Quantities are limited, so don’t delay! Register today for this exclusive Card Member offer.

Terms and Condiitons:

To view the list of participating NYC locations and operating hours, visit DeltaAmexPerks.com/Shack 

Card Member may enjoy one complimentary hot sandwich (including a double or single burger of any kind listed on Shake Shack’s menu, including limited time offers, as well as the ‘Shroom burger, Chick’n Shack and flat-top dog menu items). Offer based on first come, first served with limited space available or while supplies last. Delta and American Express reserve the right to close the event at their sole discretion and without prior customer notice.  

This offer is non-transferable and good only for a single visit and one-time use by Delta SkyMiles® Credit Card Members. Offer valid only at Battery Park City, Fulton Transit Center, Grand Central Terminal, Herald Square, Madison Square Park, Midtown East, Morningside Heights, Penn Station, Theater District, Upper East Side, Upper West Side, Dumbo, Downtown Brooklyn, Flatbush, Forest Hills, and Queens Center. Advance online registration is required. To redeem offer, Card Member must show his/her confirmation email with unique voucher at the participating Shake Shack location. Travel to and from participating Shake Shack locations is the responsibility of the Card Member.