You can take pretty much whatever you want through but for ease I would just get boiling water when you’ve passed security and also take a couple of pre made too for a back up.
You can take water, formula, anything that baby would need while traveling. Try to take 3-4 bottles of extra formula with you in carry on. Keep baby items separate and ready to be taken out of bag in security if required.
I used to take the pre made formula or powder in powder holders and a bottle of water. Had a travel bottle warmer! Xx
I took sooo in many already made aptamil milks on Ryan Air in hand luggage and cases it was absolutely fine xx
Thank you all that’s really helpful to know!
You can take water and powder or pre-made, I’ve taken a whole tub of formula and like 3 bottles of water and pre made all at once before, they just test it so it’s a bit long at security but never any issues