Carry-On Only Packing List

There’s no universal size. Many U.S. airlines allow a carry-on of about 22 x 14 x 9 inches including wheels and handles, plus a personal item that fits under the seat, but some international and low-cost carriers set smaller dimensions or a weight limit, sometimes as low as 7–8 kg (15–18 lb). Check every airline on your itinerary, including partner and regional flights.

Your fare matters too. Some basic economy and ultra-low-cost fares include only a personal item, so read the fare rules before you buy; our basic economy guide explains the trade-offs.

As of 2026, TSA’s 3-1-1 rule limits liquids, gels, aerosols, creams and pastes in your carry-on to containers of 3.4 ounces (100 ml) or less, all fitting in one quart-size bag per passenger. Medications and infant formula or food are exempt in reasonable quantities but need separate screening. Rules can change, so check TSA’s liquids page before you fly.

Solid toiletries stretch the quart bag: shampoo and conditioner bars, solid deodorant, toothpaste tablets and stick sunscreen. Most other countries apply a similar 100 ml limit at airport security, so the same kit generally works abroad.

Build a capsule wardrobe in one color family: two bottoms, four or five tops, one warm layer, and one pair of shoes besides the pair you wear. Every top should work with every bottom, so a week of outfits comes from a handful of pieces. Compression packing cubes keep the bag small and organized for security.

Wear your heaviest shoes and jacket on the plane, roll soft items, and plan one sink or hotel laundry session. Keep power banks and spare lithium batteries with you in the cabin; if your carry-on is checked at the gate, take them out first. Our business trip packing list applies the same approach to work travel.