If your baby is bigger you can use a rear facing best convertible car seat for air travel. (babieslounge.com)
Before buying best convertible car seat for your baby you need to keep in minds a few things. (strollerlab.net)
Let him sit until reaching the maximum height or weight for rear facing in their best rear facing convertible car seats which is between 2 — 4 years. (babieslounge.com)