I've become somewhat an expert what comes to travelling with kids. Ideally I would like to travel light but it's not so straight forward anymore when you have to consider the needs of your little ones.
My travel essentials are an iPad, few diapers, wet wipes and these thermos food jars. They are my best discovery. They keep food warm for hours. I make sure I fill them with something I know my kids like and is easy to eat (read doesn't make a huge mess) e.g. pasta, omelette or risotto. I also take few snacks and treats with me so I can bribe or blackmail them
I've had easy flights, total nightmare flights but mostly something in between. I still don't really enjoy flying with my kids especially if I'm on my own but nowadays I'm much more relaxed and think the days when I can actually sit in peace and read a magazine are not so far away.