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How to Pack a Carry-on
By the NanoPack team · Updated on August 3, 2026
To pack a carry-on only, build a small wardrobe in one or two matching colors so a few pieces mix into many outfits, and plan to re-wear and do laundry rather than pack a fresh outfit a day. Roll soft clothes and use packing cubes to compress, wear your bulkiest jacket and shoes to travel, and keep toiletries to travel sizes under 100 ml in one clear quart bag. Check your bag against the airline's size limit, and put anything you cannot replace in your personal item.
Traveling with only a carry-on means no baggage fees, no waiting at the belt, and no lost luggage. The trick is a small, deliberately mixable wardrobe plus a few compression habits, so a week or more fits in a bag that stays with you the whole way.
Build a two-color capsule
Pick one or two colors that all work together, so every top goes with every bottom. A handful of pieces then makes a week of outfits, which is the whole reason a carry-on is enough.
Plan to re-wear and wash
You re-wear jeans, layers and shoes far more than underwear. Pack one set of underwear and socks per day, but only a few tops and bottoms, and plan one laundry run for a longer trip.
Roll and use packing cubes
Roll soft clothes tightly and pack them into cubes to compress and organize. One cube for tops, one for bottoms, one for underwear keeps a small bag from becoming a mess.
Sort the liquids
Everything liquid or gel must be 100 ml or smaller and fit in a single quart-size clear bag for security. Decant your toiletries into travel bottles or buy solid versions like a shampoo bar.
Wear your bulkiest items
Travel in your heaviest shoes and your jacket, and stuff its pockets with small heavy things. What you wear does not count against your bag.
Check it actually fits
A bag sold as carry-on can still fail the sizer once it is full. Measure it against your airline's limit before you leave, since European budget carriers are tighter than US airlines.
Load the personal item
Your laptop, documents, medication, chargers and anything you cannot replace go in the personal item under the seat, so they are always with you even if the cabin bag gets gate-checked.
Tips
A shampoo bar, a bar of soap and a solid deodorant are not liquids, so they never count against your quart bag and cannot leak over your clothes.
A single wash in the middle of a trip roughly halves the clothes you need to carry, which is how two weeks fits the same bag as one.
Common mistakes
- Packing a fresh full outfit for every single day
- Full-size toiletries that fail the 100 ml liquids rule
- Never checking the bag against the airline's sizer
- Putting your laptop or medication in the overhead bag that can get gate-checked
Frequently asked questions
With a two-color capsule wardrobe and one laundry run, a carry-on comfortably covers one to two weeks. The limit is rarely the days, it is packing a separate outfit for each of them instead of re-wearing and mixing.
On most US airlines it is 22 by 14 by 9 inches (56 by 36 by 23 cm) including wheels and handles. European budget carriers are smaller, so a bag within about 55 by 35 by 20 cm clears almost everywhere. Check yours against the airline before you fly.
Liquids and gels must be in containers of 100 ml (3.4 oz) or less, all fitting in one quart-size clear bag, with one bag per passenger. Solid items like a shampoo bar do not count.