How to Pack a Carry-On With Clothes You Already Own

Plan for the weather and your itinerary

Start with the forecast and your schedule, not your closet. Check the expected temperatures and rain for each day, then list what you will actually do: walking tours, a business meeting, a nice dinner, a beach afternoon. Each activity needs one outfit that works for it. Most trips need fewer distinct outfits than you expect, because several activities can share the same pieces.

How many clothes to bring

A useful rule is to pack for about four days, whatever the trip length, and plan to re-wear and wash. For a trip of a week or more, the same small set works if you do laundry once. Pick clothes that share a colour palette so every top goes with every bottom. If you cannot picture at least three outfits for a piece, leave it at home.

Build outfits from what you already own

Lay out your favourite tops, bottoms and one layer on a bed. Choose pieces you already wear often and that are comfortable for walking and sitting. Test each top with each bottom. Keep what mixes easily, and swap out anything that only works in one combination. Pieces you know fit well beat a new item you have not tested.

Shoes and layers

Shoes take the most space, so wear your bulkiest pair on travel day. Add a second pair only if your plans really need it, such as dressier shoes for dinner. Wear or carry your heaviest layer through the airport, and pack thinner layers that can be added together for warmth rather than one thick item.

A four-day example you can adapt

Worn items are what you have on during travel; packed items go in the bag. Here is one way to split them for a four-day trip.

• WornTop 1, bottom 1, the layer and your main pair of shoes.
• Packed topsTop 2 and top 3 (3 tops in total, counting the one you wear).
• Packed bottomsBottom 2 (2 bottoms in total, counting the one you wear).
• Layer1 layer, worn on the way or packed flat on top.
• ShoesOne pair worn, plus an optional second pair packed.
• Underwear and socksOne pair per day plus a spare, or enough for a quick sink wash.
• EssentialsSleepwear, chargers, medication, toiletries, and anything specific to the trip such as swimwear, a rain jacket or a work lanyard.

Adjust for conditions: in cold weather make the layer warmer and wear it, and swap one top for a long-sleeved one. In heat, choose lighter fabrics and skip the layer unless evenings are cool. For rain, put a packable shell in the layer slot and wear water-resistant shoes.

Laundry and organizing

Washing a top in the sink and hanging it overnight keeps the pack small. Roll or fold clothes into one group per outfit, or use packing cubes to separate clean from worn. Put shoes at the bottom near the wheels, heavier items low, and your layer on top for easy access. Keep a small bag for worn clothes so they do not mix with clean ones.

Airline size, weight and liquids rules

Carry-on size and weight limits differ between airlines, and fares such as basic economy can change what is allowed, so check your airline's limits before you go, along with local security rules at your departure and connecting airports. In the United States, TSA generally limits liquids, aerosols and gels in carry-on bags to containers of 3.4 oz (100 ml) or less, all fitting in one quart-size clear bag. Medically necessary liquids are an exception, and you should declare them at the checkpoint. Read the TSA liquids rule for details. For more general advice, see REI's guide to traveling light.