This question already has an answer here:
My minor daughter is traveling by herself internationally, leaving from Boston's Logan airport.
It's the first time she's traveled via air on her own, and I'd like to go with her to her gate (past security) to make sure she doesn't have any hassles.
I've seen some indications that it's possible to do this, but I've not had any luck figuring out how to do it.
Is this possible?
If so, how? Do I need the airline to OK it? TSA? Someone at Massport?
Closed, and the dupe helped me. The airline is United, and they explicitly say on their website (I was missing the key phrase "gate pass" in my searches):