Many doctors recommend that babies under three months of age should not travel on airplanes due to the recirculated air and increased risk of illness. Air travel with older babies requires planning and preparation as well. Check out these sites for tips.
Flying with kids
This article offers several tips and suggestions for smooth flying.
Working Mom's Refuge
Contains advice on keeping your baby's ears pain-free and other in-flight tips.
Tips on keeping baby happy and healthy on board.