Keep Calm - Carry On
I just got back from six plane flights in two days. Everything from little puddle jumper prop planes to jumbo jets. I took The Aviator as carry on for each and every one. Not only did I keep it under the seat in front of me on some flights (with more than enough room for my messenger bag, too), it also easily fit in even the smallest overhead compartment (the prop plane overhead compartment was comically small).
So much fun to always be able to have a jib with me wherever I go!