The Complete Guide to Cabin Luggage: What You Can (and Can’t) Take on a Plane

Whether you’re a frequent flyer or taking your first weekend trip, there’s one moment we all dread: standing at airport security, silently praying that nothing in your suitcase triggers alarms.

Cabin luggage rules can seem like a confusing medley of size limits, liquid bans, and mystery items you didn’t realise were prohibited. But don’t worry, this guide cuts through the jargon to provide you with simple, practical guidance on what’s allowed on board (and what isn’t), helping you sail through security with confidence.

What counts as cabin luggage?

Cabin luggage, often referred to as hand luggage or carry-on, is the suitcase you bring with you on the flight. Depending on your airline, you might be allowed:

• One small cabin bag usually fits in the overhead storage.
• One personal item, such as a backpack, handbag or laptop case.

But there’s a catch: each airline has its unique luggage policy. Let’s have a look at some UK favourites:

Pro tip:

When measuring your bag, always include wheels and handles; even if you do, security will not disregard them.

Always measure and weigh your luggage to ensure you’re not faced with a fine!

What about liquids?

Let’s talk about the infamous 100ml rule, which catches even experienced travellers. Here’s what you need to know:

Liquid containers must be no larger than 100ml.

All containers must fit inside one clear, resealable bag (maximum of 1 litre). You can only bring one of these bags. That includes water, shampoo, toothpaste, lotions, gels, and makeup. And yes, slime and snow globes also count as liquids.

Check out our airport liquids guide for more information.

Exception to the rule:

• Medications: More than 100ml is permitted with a doctor’s note or prescription
• Baby food/milk: Reasonable amounts are fine; however, expect further screening.

In our tech-filled lives, it’s no surprise that electronics are part of our trips. Here’s what’s allowed in your cabin baggage:

• Laptops, tablets, phones, e-readers, cameras
• Chargers and headphones
• Electric shavers and travel irons
• Power banks and spare lithium batteries, but only in your hand luggage, not in checked bags

Ensure that your devices are charged. Airport security may ask you to turn them on, and if you cannot, they may confiscate them.

Electronics not allowed: Hoverboards, e-scooters, and anything with a big lithium battery.

What NOT to pack in your cabin bag:

This is where things can become a little unexpected. Here are the main no-gos:

• Sharp objects: Including scissors with blades over 6cm, penknives, and tools.
• Weapons or replicas: Yes, even toy guns.
• Flammable items: Fireworks, lighter fluid, and certain aerosols.
• Sports equipment: Baseball bats, Golf clubs, and Ice skates are prohibited.

You can bring a lighter, but only one and it must remain in your pocket, not in your bag!

For more advice, check out our guide to airport essentials.

Don’t get stuck at security – always check your airline’s item restrictions for cabin luggage.

Flying with kids? Here’s what you can bring:

If you are travelling with a baby or toddler, the good news is that airports are more flexible.

• Baby food, formula, and breast milk are allowed in reasonable quantities.
• A collapsible stroller or pushchair may usually be taken to the gate.
• Wet wipes and baby cream are allowed within the liquid limits.

Tip for parents:

If you are unsure, pack what you need, but be prepared for a quick security check. Staff are generally helpful when it comes to family travel.

Final packing tips:

• Before packing, double-check your airline’s policy; they change more frequently than you’d expect.
• Organise your liquids and electronics for quick and easy access at security.
• Weigh your bags before you leave home to avoid painful check-in fees.
• Leave room for souvenirs, because who doesn’t come back from a trip with more than they left with?

For more packing tips, check out our guide to packing light when going on a 1-week trip!