Pack the carry-on as though the checked bag will arrive a day late. That single assumption produces the right list without any further thinking: documents, medication, chargers, valuables, and enough to be a functioning person for twenty-four hours. If the bag turns up on time you have carried a shirt for nothing, which is a very cheap insurance premium.
The short version
- Everything irreplaceable: passport, entry permission, medication, prescription, insurance details.
- Everything valuable: laptop, camera, jewelry. Airlines exclude these from checked-bag liability.
- Everything with a battery in it. Power banks and spare batteries are required to be in the cabin.
- One change of clothes, plus whatever you need for a first morning.
- Split it in two: a small personal item you keep, and a roll-aboard that may be taken at the gate.
What You Need to Know
The carry-on is not "the bag with the things you want on the plane". It is the bag that guarantees the trip continues if the other one does not arrive. Sorting by that criterion is faster than any checklist and produces a shorter list than most people expect.
Irreplaceable
Passport and any visa or entry permission. Copies of both, stored separately. Insurance policy number and its emergency telephone number. The accommodation address on paper. The onward ticket, reachable offline. None of these can be reissued at an airport at 11pm.
Medication
All of it, in original labeled packaging, with a copy of the prescription and enough for several days beyond the itinerary. A delayed bag with someone’s medication in it is the one version of this that becomes an emergency rather than an inconvenience, and it is entirely preventable.
Valuable
Laptops, cameras, jewelry and cash. Airline conditions of carriage generally exclude or severely limit liability for valuables in checked baggage, so a claim for a stolen camera from a hold bag is usually not a claim at all.
Batteries
Power banks and spare lithium batteries are required to travel in the cabin rather than the hold, and devices above 160 watt hours are not permitted on a passenger aircraft at all. This is a fire-risk rule about a hold nobody can reach in flight, and it is enforced.
A functioning twenty-four hours
A change of clothes, basic toiletries within the liquid limit, a toothbrush, and whatever you would need to attend the first thing on the itinerary. On a trip that starts with a meeting or a tour departure, that list is slightly longer.
What to Do Before Your Trip
- Split the cabin luggage in two: a personal item that stays with you, and a roll-aboard that may be gate-checked on a full flight.
- Put documents, medication, batteries and valuables in the personal item, not the roll-aboard.
- Check the liquid limit and the bag it has to go in, and pack toiletries accordingly.
- Charge everything the night before, and pack the charger where you can reach it.
- Photograph the contents of both bags. It takes a minute and it is what an insurance claim asks for.
- Check the cabin bag’s size and weight against every leg, since regional aircraft are stricter.
Briefing a group? The instruction that prevents the most trouble is the simplest one: documents and medication in the bag that stays with you, never in the bag that goes below.
Explore group travel planningImportant Considerations
The roll-aboard is not guaranteed to stay with you
On a full flight it is gate-checked, and you are given a few seconds to take out what you need. If everything essential is inside it, those seconds are stressful and easy to get wrong. The personal item is what you actually control.
Liquids
Everything liquid, gel, cream or aerosol in the cabin is subject to the limit and to the container rule. Medication is generally treated differently but declare it at screening rather than assuming. Solid alternatives remove the problem entirely for most toiletries.
On a long-haul overnight
Add the things that make the flight survivable: headphones, a water bottle to fill after security, a warm layer, and anything you use to sleep. This is a small list that makes a large difference to how you arrive.
Do not overpack the cabin bag
A carry-on so heavy you cannot lift it into the locker is a problem you have created for yourself and for the person sitting next to you. If it is at the limit, some of it belongs in the hold.
Tips for Group Travelers
- Give the group the four categories: irreplaceable, medication, valuable, battery. It is easier to remember than a list.
- Remind travelers with prescriptions to carry the prescription, not only the pills.
- Ask people to photograph their bag contents before departure, which makes any later claim straightforward.
- Warn about gate-checking on full flights, so nobody has everything important in a roll-aboard.
- Carry a spare charger and adapter yourself. Somebody will forget one.
Common Mistakes to Avoid
- Medication in the checked bag. The one that becomes an emergency.
- A power bank in the checked bag. Not permitted.
- Valuables in the hold, where the airline’s liability largely does not reach.
- Everything important in the roll-aboard, which may be taken at the gate.
- No change of clothes, on the assumption the bag will be fine.
- A cabin bag you cannot lift. Somebody has to.
Frequently Asked Questions
What must never go in a checked bag?
Documents, medication, valuables, and anything with a spare lithium battery, including power banks. The first three because they cannot be replaced or claimed for; the last because aviation rules require batteries to travel in the cabin. Items that should not go in checked luggage covers the full list.
Do I really need a change of clothes in my carry-on?
On an international trip, yes, and particularly on a connecting itinerary where the bag has more chances to go astray. It costs very little space. If your trip starts with something you cannot attend in travel clothes, pack for that specifically.
Can I take medication through security?
Yes, and medication is generally treated differently from other liquids. Keep it in original labeled packaging, carry a copy of the prescription, and declare it at screening rather than assuming. Also check that what you take is legal at your destination, which is a separate question from whether you may fly with it.
What is a personal item?
The smaller bag that goes under the seat in front, in addition to the cabin bag. It is the one that stays with you even if the roll-aboard is gate-checked, which is why documents, medication and batteries belong in it rather than in the larger bag.
Is it worth photographing what I packed?
Yes. It takes a minute and it is exactly what an airline or an insurer asks for if a bag is delayed or damaged. Photograph the open bag and keep the receipt for anything expensive you are carrying.
Related Travel Tips
- Packing and luggage, the section this guide belongs to.
- Carry-On vs. Checked Luggage. Whether to check anything at all.
- What to Do About Lost Luggage. Why the carry-on list is what it is.
- What Documents Do You Need for International Travel?
Plan Your Trip With LABUSA Travel
What belongs in the cabin depends on what the first day of the trip asks of you, and that is a question about the itinerary rather than the suitcase. LABUSA Travel plans arrivals that a delayed bag does not ruin.
Talk with a LABUSA Travel advisor about a trip you are considering, or read about our group travel service if you are traveling with a party.
Verify Before You Travel
Cabin bag sizes, weights and liquid rules are set by your airline and by the security authority at your departure airport; confirm both before you pack. Battery rules are set by aviation regulators: see the FAA’s PackSafe guidance. Whether a medication is legal at your destination is a question for that country’s embassy or consulate and the U.S. Department of State. This page is general guidance, not medical or legal advice.
Travel requirements, health guidance and safety conditions can change. Always confirm current requirements with the appropriate government or official authority before departure.