As part of my “Need to Know” airlines series for parents flying with infants and young children, here are some important points to be aware of (and be prepared for) if you will be flying American Airlines with a baby or toddler. UPDATED for 2018.

First, there is one stand-out difference from other airlines you should be aware of before heading to the airport. American Airlines will not accept strollers weighing 20 lbs. or more at the gates of its f...