L.M.
Personally it's just more gear to have and collect dust. Save the extra cash and put it in the old college fund. We've traveled a lot with our daughter and In the grand scheme of things it's best to just check your car seat and/or hall it through the airport. It's a work out but the whole ordeal will be over before you know it. We always had good luck getting an extra empty seat on the plane and strapping it on in the plane. For some reason she would associate getting buckled in, like in the car and didn't try to move around so much on the plane. We have a very active child so this was a huge plus. I think it was also easier for her to sleep in her car seat on the plane since it felt like being in the car. Good luck! -LL