Doona car seats are designed for use in vehicles, but can also be used on airplanes. When using a Doona car seat on an airplane, you will need to purchase a separate base that attaches to the airplane seat. The base has metal clamps that secure it to the seat, and straps that go around the back of the seat to keep it in place. Once the base is installed, you can then clip the Doona car seat into it. Your child can then sit in the car seat during takeoff and landing, as well as during any turbulence.