Yep, I've done it a few times. Gotta love those smaller gingerbread houses. They will put it into a box for you....at least they have for me when I bought mine at BC.
Thanks We got one at the GF last year and my husband put it in a suitcase packed with stuff around it bbut we held our breath all the way back to Chicago. Lucky for us it arrived in not broken but I am not willing to risk it again.Carry on is what we will do