as pp have said: travelling on plane is much easier when ur bub is small. we've travelled to adel when monsta was 4mths and overseas to/fro when he was 5mth&6mths.

* baby carriers r handy in the terminal but i wasnt allowed to use it in the plane
* the plane tends to get a bit chilly so bring blanket
* for international flights, request for bassinette when u book ur tickets. even if the baby doesnt sleep in it, its handy to have the extra room!
* toilets on plane r very hard to change bub, so plan to change bub just before u fly & as soon as u land if u can. it should b fine not changing bub for interstate flights until u landed
* dont rush urselves, babies can feel the stress. we made a big mistake rushing one time & baby wouldnt stop crying esp there were so many new faces!!
* bottles & dummies r helpful, if u bf thats even better
* baby supplies r exempt frm the liquid restriction. u can carry a carry-on bag for urself AND a nappybag in case u didnt know

sorry for repeating info which u may already know. alot of things r more relevant to international flights. PM me if u want more info, i'll try to help