Delta currently has a policy that allows passengers with nut allergies to preboard in order to clean their seat area from traces of nuts. You just need to tell the gate agent before boarding in order to preboard.
Of course the other advantage of preboarding, often prized by elite members, is that you will have space for your carry-on luggage in the overhead compartment.
This will work even if you’re on a basic economy fare.
American announced that they too will allow preboarding for passengers with nut allergies starting on December 12. They don’t serve any nuts onboard, but the policy is in place in case previous passengers had nuts so that the new passengers can better clean the area.
I’d assume that the other US airlines won’t be far behind in matching this policy.
Have you or a family member with a nut allergy taken advantage of a preboarding offer?