We flew with Katherine when she was 4 months old. I think the basics have been covered, but the main thing is something to help with her ears on take-off and landing. Nursing or pacifiers should work well--if she will take a pacifier. Just some practical things--make sure you take more diapers than you think you need, and a couple of changes of clothes for the baby. I can't tell you how many times I had to change Mary Joyce's clothes on the flight home from China. (That was a much longer trip, of course.) Also, put an extra shirt for you in your carry-on in case of spit-up, etc. When our girls were little, we used the snugli for getting around in airports. It works great, and easily fits into the overhead compartment on the plane. If you prefer to use a stroller, you can check it at the gate when you board, and they will have it there for you when you get off the plane.