I took Jacob to amerca when he was 9 months old. He slept the whole flight (in a baby flight cot) but when we got there he was on our time clock which meant he was awake from 3am every night... we tried everything to keep him awake longer but by 6pm most evening he was fast... we gave up in the end because we knew we'd have to get him back on our time clock when we came home. At 9 months there no trouble thou... we took him out with us every evening in his pram, he just slept. When he was 13 mnths we took him to portugal which was a little harder during the day keeping him entertained but he loved the pool, and slept for 3 hours during the hottest part of the day. We turned a sun lounger on it's side and made a little play pen for him... buckets of water, sand.. they love it.
h x