I made the mistake of booking a flight on United Airlines with my 20 month-old daughter (her first flight). I asked for the bulkhead seats becasue there is a little more room. Their answer?

"These seats are withheld from general assignment and reserved for our Mileage Plus Premier members who fly many miles with us. Many of these Premier flyers must make last-minute reservations and these seats are reserved to assure we can accommodate them when seating choices become limited."

In other words, although those seats are available -- and I purchased an adult ticket for my daughter -- they will not accomdate a our needs. I have since learned that United is rated the worst of the 10 major airlines by Consumer Reports. Avoid my mistake!!!