I took my Pfaff QE 4.0 as a carry-on from Dallas to Seattle. I used a standard wheeled sewing caddy (such as they sell at Hancocks fabrics). It fit in the overhead bin but was heavy to lift and I relied on the kindness of strangers for help with that task. If I were going to do it again I would invest in a Totes (sp?) sewing machine caddy because the handle pulls fro)m the narrow end so it could be wheeled all the way down the aisle. The cheaper caddies have the handle on the wide side and it cannot be wheeled between the seats. I had to carry that sucker all the way to the back of the plane where I was seated and it about broke my back. Then had to lug it to the front when I landed. I would have gladly paid the price of the more expensive caddy to have avoided that misery. I wouldn't consider checking my expensive machine. I have since bought a Featherweight and a soft sided case for it so, if I ever want to fly with my machine I can just fit it under the seat in front of me.