Can I bring hot water and cooled boiled water in milk bottle to prepare formula milk for my baby while in plane ? My LO drinks about 300ml. Hot water flask up the plane will have any pressure issues when plane is up in the air ?

i brought both hot water and cooled boiled water on flight with me. No issues with the pressure. Secondly, when you cross the security, be the one carrying the backpack and the baby. They will let you thru with the water

It's best to check with the airline. I've brought a flask of porridge up the plane (Scoot) to Taiwan before. If it's just hot water you need, why not get it on board the plane?

Can no problem.... I brought up 2 bottles each 500ml of thermal flask up to plain... can clear immigration when they see u are carrying baby

Why not request for the water you need. In that case it would save you the trouble of carrying so many things and lighten your bag as well.

I brought 1 hot flask of water think ard 400ml and cooled water of 500ml before when travel via sq to and back from Perth.

thanks