Clear resealable toiletry bag with 100ml bottles
Amazon Australia
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Can you take contact lens solution on a plane?
Carry-on: Conditions Checked: Yes No limit on domestic flights
Treated as an ordinary liquid at 100ml or under internationally. Larger quantities are allowed in the cabin when they are medically necessary, but you must declare them at screening and may be asked for evidence.
Travel-size bottles are sold at most Australian pharmacies and save the conversation entirely. There are no limits on domestic flights.
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.
Gear that meets this rule
Chosen because it satisfies the rule above, not because of what it costs. Links go to Amazon Australia and we may earn a commission, which never changes what we recommend.
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Liquids & toiletries
Protein powder
Protein powder is an organic powder, so it is not caught by the 350ml cap that applies to inorganic powders on international flights.
Vitamins and supplements
No restriction on flying with them in either bag.
CBD oil and cannabis products
Cannabis products including CBD are prescription-only medicines in Australia and cannot simply be carried in or out.
Liquids, aerosols and gels
International flights: containers of 100ml or less, all fitting in one resealable clear bag of about 20cm x 20cm, one bag per passenger.
Water bottles
Take it through international screening empty and fill it airside.
Sunscreen
Counts as a liquid internationally, so 100ml or under in the cabin.
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.