My 18 year old is taking his first solo international flight. Is it possible to accompany him to the gate area? I know you can get special access to accompany minors, but Im wondering if it is possible with an 18 year old? It's his first solo international flight. And he's going to be sitting there at the gate alone for like 2-3 hours. And then another 7.5 hours to London. I never had it that rough. I'll call United in the next couple days, but just wondering.