We flew Airtran, and while there wasn't anywhere to hang it, they made sure that it laid flat in the overhead. It was kind of a pain carrying it all around three airports, but it sure beat paying another checked bag fee. When we got to MX, we just hung it up, no steaming required, but mine was all lace. Valeria said they need 48 hours to guarantee it to be ready if you are having it steamed.