Is the car seat FAA approved for aircraft use? If not, get the thing from here. http://kidsflysafe.com/ I used one for my son on long hauls between the US and India on the first 777's to be placed in service on AA for years. Works great. Assuming it is not a newborn. I sent mine to someone on this board a few months ago with the stipulation that it is sent to whoever needs it when finished with a trip. Community harness so to speak.