Travelling with HiPP formula

Enough for the trip, in all three jurisdictions this page checked, and none of them applies the ordinary liquids limit to it.12

The TSA is the most explicit. Formula, breast milk, toddler drinks and baby food above 3.4 ounces are allowed in carry-on baggage and do not need to fit inside the quart-sized bag, because the TSA treats them as medically necessary liquids.1

GOV.UK gets to the same place by a different route: enough baby food, baby milk and sterilised water for the trip, with no legal limit on the quantity, and a note to check with your airport before you travel.2

EU law names it directly. Airports shall screen liquids to be used during the trip for a medical purpose or a special dietary requirement, including baby food, and the hundred millilitre containers in a one litre bag are a route to exemption from detection screening rather than a cap on what a parent may carry.3

Not as a cap. A ready-to-feed HiPP bottle holds 200 ml, which is well over the limit, and the limit is the thing formula is carved out of.16

What replaces the cap is a procedure. The liquid comes out of your bag and is screened separately, you say what it is before screening starts, and an officer may test it for explosives.13

The practical detail worth knowing is about the container. The TSA recommends clear bottles rather than pouches, because its bottle scanners cannot always read a pouch, and a pouch it cannot read is one you may be asked to open.1

Here the two regimes disagree, and it is the one thing on this page worth checking before you pack rather than at the airport.12

GOV.UK's table marks formula milk, cow's milk, sterilised water, soya milk and baby food as allowed in hand luggage with the baby present. Breast milk is the exception it makes: that may be carried without the baby, in containers up to 2,000 ml, and not frozen.2

The TSA says the opposite in as many words: your child or infant does not need to be present or travelling with you to bring breast milk, formula and related supplies.1

Powder sidesteps the liquids rules entirely, because powder is a solid. It also weighs a fraction of what the same number of feeds weighs in bottles, which is the argument for it on any trip longer than a day.2

What powder needs is water, and not any water. The NHS method is a measured amount of powder in a clean dry container, a vacuum flask of water that has just been boiled, and an empty sterilised bottle, with the feed made only when the baby needs it. It says a full sealed flask stays above 70 °C for several hours.4

Where that is not possible, the NHS names the alternative itself, and it is the liquid: use a carton of ready-to-feed formula.4

The CDC answers this one in two steps. If you think the tap water is unsafe, use bottled water until local authorities say otherwise.5

And where the water cannot be made safe at all, because boiling, disinfecting and filtering do not remove chemicals or toxins, the CDC names ready-to-feed formula as the option.5

The NHS is more reluctant about bottled water and says why: it is not sterile and may carry too much sodium or sulphate. It allows it where the supply is unavailable or contaminated, still following the step-by-step method.4

With an ice pack, which both authorities let you carry. The TSA allows ice packs, freezer packs and frozen gel packs whether or not there is milk with them, and GOV.UK lists cooling gel packs and ice packs as allowed in the cabin and the hold.12

The NHS puts numbers on what that buys you, and the middle row is the one people do not know.4

Read the framing as well as the figures. The NHS calls a transported feed a one-off, tells you to prepare it at home, cool it and refrigerate it until it is cold, and to take it out only as you leave.4