I took this to Ireland and flew Continental. It fit under some of the seats and some it did not (does not fit with isle seats and seats where the life preserver fits in a metal box under the seat in front of you). The top inside plastic zippered compartment inside the front opening of the carryon tore away from where it was connected to the body (it was not overloaded) and I had to sew a heavy strip of ribbon over the tear to keep the contents from spilling out. Otherwise, a good use of space. I liked it.