Here are a few links to threads where flying with little ones has been discussed before:

https://www.bellybelly.com.au/forums...=324205#324205

https://www.bellybelly.com.au/forums...ghlight=flight

https://www.bellybelly.com.au/forums...ghlight=flight

https://www.bellybelly.com.au/forums...ghlight=flight

I hope that helps!! Good luck!