Originally Posted by IrishNJ

United, TAP and LOT allow Business Zeds, not sure any others.

Just look under ID Agreements on IDTravel, it lists what and who is permitted. C class (column C) is Business (same goes for the guy asking about a fiancee).

Worth checking anyway, for instance Aer Lingus states: no t-shirts without a collar. No runners or sneakers of any type on anyone over 12years. And that's even for economy. If your teenager wears a nice new pair of Nikes, they will not let you on the plane.