GF bun available, bit dry but not too bad. The burger itself was pretty good. Was told the GF bun is toasted separately from the regular buns. I spoke to someone at the counter and they gave the kitchen a heads up there was an allergy order coming up. You can order on the kiosk and add allergy instructions. There is a protocol they are supposed to follow for allergy orders. Sadly no dedicated fryer.
The GF bun was excellent and in general they make solid burgers. I don’t know if they have a dedicated fryer for fries, so you may want to check as I’m not celiac.
Most Shake Shack locations offer gluten-free buns for burgers. A lettuce wrap is also an option.
They use a separate space to prepare the gluten free burgers. You get gluten free buns. When you put your order in the kiosk you can label what allergies you have. A manager came out to tell me that they can’t guarantee the fries are gf because they cycle the oil sometimes.
Located in Terminal C, take a right (towards gates C23-36). Was able to order a cheeseburger with a GF bun (pretty thin but did not fall apart!). They entered it as a gluten allergy and I asked them to change their gloves. The bun is toasted separately on the grill instead of in the toaster oven. I did not feel overly safe, but thankfully did not get sick. Nothing too special but nice to have an option in the airport.