We just got back from a 9 hour international flight on Thursday. DS # 1 is 4 and DS # 2 is 15 months. abbadabbadoo has some great advice. Only the night flight was HEAPS better for us because they both slept the whole way back. Going over was diificult. This was a day flight. They were both sick on the plane so definately take a few changes of clothes. There are 2 seats on the plane that have anchor points for baby car seats so we booked that seat and for the day flight DS # 2 sat in his car seat. We had to pay the child fare for the seat though. I would definately pay the extra and get a seat for DD. It will be a lot cheaper than your seat and give you heaps more room. We took snacks and new toys and we also took an ipod touch that had their favourite TV shows on it. We had them drinking or sipping for both take off and landing and that all went smoothly. I also took DS # 2 favourite blanket to sleep (which was good because the plane was freezing) as this was a familar thing for sleep time. He doesnt use a dummy so if your DD uses a dummy make sure you don't forget it. We bought the quicksmart stroller and they let us put that in the bag and take it on as carry on. Check when you check in though is you have this because the size of the bag is slightly bigger than the allowed carry on size. A hit with toys for us was one of those things that light up and spin when you press a button. I don't know what they are called but they are really bright and spin around. You see them at shows. Well DS # 2 loved this and spent a long time working out how to press the button in and played with it. It is really hard to tell how they will be on the plane. We didnt have such a good day flight but the night flight was great because they slept. I think we were very lucky though that they didnt get overtired otherwise it might of been a bad night flight. If I think of anything else I will post again.

Just one question. Are you travelling on your own or is there someone else going with you?