Football season is underway, and Shake Shack is giving away free chicken sandwiches for the next couple of months to celebrate its return. Every Sunday for the next 13 weeks, customers will be able to get a free Chicken Shack sandwich with a qualifying purchase.

Shake Shack is offering a deal for free chicken sandwiches for the duration of football season. For a second year, Shake Shack will offer customers a free Chicken Shack sandwich when they spend at least $10 or more. The deal runs for the next 14 weeks, through Sunday, Dec. 15, per Shake Shack.

The return of football season also means the comeback of tailgating, and one fast-casual chain has your appetite covered.

Shake Shack is bringing football fans and chicken sandwich lovers together for free Chicken Shack sandwiches every "football Sunday" for the next 14 weeks.

That's because Shake Shack is giving away a free Chicken Shack with every order over $10 on Sundays for most of the football season. The freebies last until December 15.

Football is back – and Shake Shack is celebrating with free Chicken Shack sandwiches! For the next 13 weeks, on every Football Sunday, Shake Shack is offering free Chicken Shacks made with its always fresh – never frozen – and antibiotic-free chicken (that’s a pledge Shake Shack plans to keep).

Football Sunday snacks are almost as important as watching the games themselves, and Shake Shack is giving one out for free. Here's how to snag the deal for the rest of the year.