We're taking our 20 month old on his first plane trip next month. Its two approx. 2.5 hour flights with a 1 hour layover in between. Because he is under 2 he is able to ride on our laps. We made the reservations months and months ago (before he was such a busy body), now I'm wishing we had paid for an extra seat so we could take the car seat and strap him in, too late now... He has ear tubes and I'm told that the pressure change wont be a problem for him so that's one thing we don't have to worry about. I'm planning on plenty of snacks and will take some toys. Unfortunately right now he's far more interested in running around an exploring than he is in any of his toys.