Can you take baby formula and breast milk on a plane?
Carry-on: Yes Checked: Yes No limit on domestic flights
Exempt from the 100ml rule when you are travelling with the infant - carry a reasonable amount for the flight. Screening officers may ask to inspect it.
Flying within Australia? There is no limit.
No limit at domestic screening. The 100ml rule is an international-departure rule, so a full-size one is fine in your carry-on within Australia.
Two rules explain most of this page. Lithium batteries fly in the cabin so the crew can reach them, and the 100ml liquid limit is an international rule. Your flight home is screened under the departure country's rules, which are sometimes stricter than Australia's.
Flying soon? Screening is the easy part
What stops Australians at the airport is more often the passport, the visa or the phone than the bag. Say where you are going and we will show you the entry rules for an Australian passport, what an eSIM actually costs there, and what the insurance covers.
Liquids & toiletries
What is actually worth booking.
New destination guides and side-by-side comparisons for Australian travellers - which eSIM, which travel card, which insurance is worth paying for, and what to sort before you go. Prices in Australian dollars, a few emails a year.
Packing something else? The full A to Z of what you can take on a plane covers 61 items, the domestic flight rules set out what changes when you are not leaving the country, and the pre-departure checklist puts the rest of the trip in order.
Last reviewed 2 September 2026. Screening, dangerous-goods and biosecurity rules change, and airlines can be stricter than the government baseline. For anything unusual, the linked source and your airline's dangerous-goods page are the final word.