J.C.
I just went on a 3 1/2 hour plane flight with my five month old. I would agree with the sucking on a bottle or pacifier during takeoff or and landing. My daughter was asleep when the plane took off and she didn't even wake up until we were an hour and a half into the flight. On the return flight, she cried for about 10 minutes when we took off. She couldn't get her ears to pop. Everyone around us seemed to be sympathetic. I ended up giving her some infant tylenol and she finally calmed down and fell asleep. So I would recommend taking the infant tylenol along just in case.