What You Can and Can't Pack in Your Carry-On (2026 Guide)

Carry-on luggage rules cover three things: how big and heavy your cabin bag can be, what you're allowed to bring inside it, and what's banned outright. Get them right and you walk through security without a second glance. Get them wrong and you're repacking at the tray, surrendering a full-size shampoo, or watching a power bank get confiscated. This guide lays out the current rules for Australian travellers in 2026 — sizes, liquids, batteries, and the items that quietly aren't allowed.

The rules shift more often than most people realise, especially around lithium batteries, so it's worth a refresher before every trip. We'll keep it practical: what to check, what to pack where, and how to breeze through the security line.

Carry-On Size and Weight Limits

Every airline sets its own cabin bag dimensions and weight, and the limit that catches people out is almost always weight, not size. For most Australian carriers the cabin bag allowance sits around 7kg, though the generous checked allowances can lull you into overpacking the cabin bag.

Airline	Typical carry-on weight	Notes
Qantas (domestic)	7kg per bag	Often two cabin bags up to 7kg each on many fares
Jetstar	7kg (up to 10kg on some bundles)	Strictly enforced; weighed at the gate
Virgin Australia	7kg per bag	Size and weight both checked
Rex	7kg	Single cabin bag on many fares

Always confirm your airline and fare, since limits vary by route and ticket type. The simplest way to avoid a nasty surprise is to weigh your bag at home before you leave — our guide on how to weigh your luggage at home shows two quick methods, and a packable Digital Luggage Scale takes the guesswork out entirely.

Liquids: The 100ml Rule

Liquids, aerosols, and gels (LAGs) in your carry-on are limited by the long-standing 100ml rule. It trips up more travellers than anything else, usually because of one forgotten full-size item.

The rule works like this:

• Each container must be 100ml or less — and it's the container size that counts, not how much is left in it. A half-empty 200ml bottle is still not allowed.

• All containers must fit inside one clear, resealable bag, roughly one litre in size (about 20cm x 20cm).

• One bag per passenger, taken out of your carry-on and placed in the tray at security.

"Liquids" is broader than it sounds — it includes toothpaste, deodorant paste, sunscreen, moisturiser, mascara, and even soft cheeses and spreads. Baby formula, prescription medicines, and essential medical liquids are exempt but should be declared at security. On most Australian domestic flights the liquid rules are more relaxed than international, but it's safest to pack to the 100ml standard every time so you're never caught out on a connection.

The easy fix is a set of small refillable bottles decanted before you travel. A tidy travel toiletries bottle set in a clear pouch means your liquids are sorted and security-ready before you leave home. For the full kit, our travel toiletries guide covers what to pack and which bag to use.

Power Banks and Lithium Batteries

This is the area with the most confusion — and the rules changed recently, so even seasoned travellers are often out of date. Here's the current position for 2026.

Power banks must travel in your carry-on, never in checked luggage. Because they contain lithium batteries with a genuine fire risk, they have to be in the cabin where a problem can be spotted and dealt with immediately. Pack one in your checked bag and, if it's found, your bag can be pulled from the aircraft — delaying your flight.

The key rules to know:

• Capacity is measured in watt-hours (Wh), not mAh. To convert, multiply the mAh rating by 3.7 and divide by 1,000. A typical 10,000mAh power bank is about 37Wh — comfortably within limits.

• Under 100Wh: generally fine, no airline approval needed. This covers almost every consumer power bank.

• 100Wh to 160Wh: allowed only with airline approval before you fly.

• Over 160Wh: not permitted in passenger baggage at all.

• Since 27 March 2026, international rules limit you to two power banks per person and prohibit recharging the power bank itself during the flight.

• From late 2025, Qantas, Jetstar, and Virgin Australia prohibit using or charging power banks at all during the flight — keep them in your seat pocket or under the seat, not the overhead locker.

The same "carry-on only" logic applies to spare lithium batteries, e-readers, cameras, and laptops. Devices with batteries installed can go in checked luggage in principle, but keeping your electronics in the cabin is always the safer, simpler choice. Keeping cables, chargers, and a compliant power bank tidy in a TidyTech™ Electronic Accessory Organiser also means they're easy to pull out for the security tray.

What You Can't Pack in Your Carry-On

Some items are banned from the cabin entirely, and others can only travel in checked luggage. The broad principle: anything sharp, flammable, or that could be used as a weapon stays out of your carry-on.

Commonly confiscated or restricted items include:

• Sharp objects — scissors with long blades, knives, razor blades, and box cutters. Small round-ended nail scissors are usually fine, but pocket knives are not.

• Sporting goods that could be weapons — cricket bats, golf clubs, and hiking poles go in checked luggage.

• Tools — anything over about 6cm, like screwdrivers, spanners, and drill bits.

• Flammables — lighter fluid, certain aerosols, and camping gas. Most are banned from both cabin and checked bags.

• Full-size liquids — anything over 100ml, as covered above.

When in doubt, check your airline's dangerous goods page or move the item to checked luggage. It's always better to check a questionable item than lose it at security.

Tips to Breeze Through Security

A few habits make the security line faster for you and everyone behind you:

1. Pack your liquids bag last, on top. So you can pull it out without unpacking the whole bag.

2. Keep electronics accessible. Laptops and larger devices usually come out separately, so don't bury them.

3. Empty your water bottle before the checkpoint. A collapsible water bottle packs flat empty and refills once you're through — saving buying overpriced airport water.

4. Wear layers you can remove easily. Belts, jackets, and bulky shoes slow you down.

5. Double-check pockets. Loose coins, keys, and that stray power bank are the usual hold-ups.

Once you know the rules, the next step is packing the cabin bag well. Our guide on what to pack in your carry-on covers the comfort items and essentials worth bringing, and the full travel packing list ties it all together.

Frequently Asked Questions

What are the carry-on liquid rules?

Liquids, aerosols, and gels in carry-on must be in containers of 100ml or less, all fitting inside one clear resealable bag of about one litre, with one bag per passenger. The container size is what matters, not how full it is, so a half-empty 200ml bottle isn't allowed. Baby formula and essential medicines are exempt but should be declared at security.

Can you take a power bank on a plane?

Yes, but only in your carry-on — power banks are banned from checked luggage because of their lithium batteries. Power banks under 100Wh (which covers almost all consumer models, including a typical 10,000mAh bank at about 37Wh) need no approval. From 100Wh to 160Wh requires airline approval, and over 160Wh isn't allowed. Since March 2026 you're limited to two power banks, and major Australian airlines ban using or charging them during the flight.

How do I calculate my power bank's watt-hours?

Multiply the mAh rating by 3.7, then divide by 1,000. For example, a 20,000mAh power bank is about 74Wh (20,000 × 3.7 ÷ 1,000), which is under the 100Wh limit and needs no approval. The watt-hour figure is what airlines use, even though mAh is the number usually printed on the packaging.

What is the carry-on weight limit in Australia?

Most Australian airlines limit carry-on to around 7kg per bag, with some Jetstar bundles allowing up to 10kg. Weight is checked more often than size and can be weighed at the gate, so confirm your airline and fare, and weigh your bag at home before you leave.

Can you bring razors or scissors in carry-on?

Disposable and cartridge razors are generally allowed in carry-on, but loose razor blades and safety razor blades are not. Small scissors with rounded ends and short blades are usually fine, while long-bladed or pointed scissors must go in checked luggage. Rules vary, so check your airline if unsure.

Know the Rules, Skip the Stress

Carry-on rules come down to a simple routine: weigh your bag, keep liquids to 100ml in a clear bag, pack power banks and batteries in the cabin, and leave anything sharp or flammable at home or in checked luggage. Learn it once and airport security becomes a formality rather than a gamble.

Set your carry-on up right with the essentials that keep you organised and security-ready — from refillable toiletry bottles to a packable luggage scale — all backed by our 2-year warranty, 30-day money-back guarantee, and free shipping, from a proudly Aussie-owned team trusted by over 300,000 travellers. Browse the full travel accessories range to get trip-ready.