Well, yes you can, as long as it is Federal Aviation Administration (FAA) approved and your child has their own seat, although you still have to get it there! A car seat travel bag makes it easier to carry the seat, along with all your other luggage and a small child, while protecting it from the knocks it may get on the way. And if you find you then need to check the car seat into the cargo hold, a tough and protective carrier bag will keep it safe on its journey as well as through the ordeal of the baggage reclaim.