The One-Bag Travel Packing List
Seven days in 40 liters is a solved problem. It needs three decisions made before you pack anything, and the rest is just a list.
We have not tested this gear. Every figure here is compiled from published manufacturer specifications and published airline policies, and the arithmetic is public so you can check it. This page contains affiliate links — see the affiliate disclosure.
For seven days in 40 L: four tops, two bottoms, one layer, one jacket, five sets of underwear and socks, one spare pair of shoes, a quart bag of liquids and your electronics. That is roughly 13–16 lb packed and leaves room to come home with something.
| Category | Quantity | Approximate packed volume |
|---|---|---|
| Tops (t-shirts, shirts) | 4 | 6 L |
| Bottoms (trousers, shorts) | 2 | 5 L |
| Mid layer (fleece, jumper) | 1 | 4 L |
| Outer layer (packable shell) | 1 | 2 L |
| Underwear and socks | 5 sets | 3 L |
| Sleepwear | 1 set | 1 L |
| Spare shoes | 1 pair | 6 L |
| Toiletries and quart bag | 1 | 4 L |
| Electronics and cables | — | 3 L |
| Slack for the return leg | — | 6 L |
Three decisions, then the list
One-bag travel is usually presented as a packing-technique problem. It is not. It is three decisions made before you touch a bag, and once they are made the list writes itself.
1. Will you do laundry?
This is the decision that determines everything else. Committing to one wash mid-trip cuts your clothing requirement by roughly 40% and makes seven days in 40 L comfortable rather than tight. Refusing to do laundry makes it genuinely hard.
A sink wash with travel detergent takes fifteen minutes and dries overnight if you pick quick-drying fabrics. A laundrette costs a couple of hours and is available in every city you are likely to be in. Either way, decide before you pack, because the answer changes the list.
2. One color scheme, or several?
Every item that only works with one other item is a passenger. If your four tops all work with both bottoms you have eight combinations from six garments; if two of them only work with one specific pair of trousers you have five. This is the whole “capsule wardrobe” idea and it is genuinely just combinatorics.
3. What are you wearing on the plane?
Worn items do not count against your allowance and they are usually the bulkiest things you own. Wear the heavier shoes, the jacket and the jeans; pack the light trousers and the trainers. On a carrier that publishes a weight cap this is worth several pounds, and it costs nothing.
The list
Clothing
- 4 tops. Two that work alone, two that work under the layer. Merino or a synthetic blend if you are washing mid-trip; cotton takes a day to dry.
- 2 bottoms. One you wear on the plane, one packed. If one pair is smart enough for dinner you have covered a whole category with no extra volume.
- 1 mid layer. A fleece or merino jumper. Worn on the plane, where cabins are cold.
- 1 packable shell. The one genuinely non-negotiable extra. A shell that stuffs into its own pocket costs about 2 L and covers every weather outcome you did not plan for.
- 5 sets of underwear and socks. With one laundry cycle this covers seven days with a margin.
- 1 set of sleepwear. Which can be a clean t-shirt and shorts you would wear anyway.
Shoes
Two pairs, one of them worn. Shoes are the single worst volume-to-utility item in any bag — a pair of trainers is around 6 L, or fifteen percent of a 40 L pack. Wear the bulkier pair and pack the flatter one, soles together, along the base of the bag. Socks go inside them; nothing else uses that space.
Toiletries
A quart bag and a small kit. The quart bag is a legal constraint rather than a packing one — TSA caps liquids at 3.4 oz per container, all inside one quart-sized bag, one bag per passenger. The rule stated precisely, including what counts as a liquid, which is broader than most people expect.
Solid alternatives — bar soap, solid shampoo, stick deodorant, toothpaste tablets — are not liquids and do not count against the quart. Swapping three items to solids is usually the difference between the bag closing and not.
Electronics
- Laptop or tablet, in a sleeve rather than a padded compartment if space is tight
- Phone, and one charger that does both if the ports allow
- A power bank — which must stay in the cabin and never in a gate-checked bag
- A universal adapter if you are leaving the country. Total watts is the number that matters, and it is usually lower than people assume.
- Headphones, worn or in a pocket
What it weighs, and why that matters
The list above comes to roughly 9–12 lb of contents. Add the pack itself and the total is:
| Pack | Empty weight | Contents | Packed total | Under a 35 lb cap? |
|---|---|---|---|---|
| Osprey Farpoint 40 | 3.27 lb | ~11 lb | ~14 lb | Comfortably |
| Tortuga Travel Backpack Pro 40L | 4.4 lb | ~11 lb | ~15 lb | Comfortably |
| Travelpro Maxlite 5 Carry-On | 5.4 lb | ~11 lb | ~16 lb | Comfortably |
Comfortably under every published cap, including Hawaiian’s 25 lb. Which is the real point: one-bag travel is not about scraping under a limit, it is about having so much margin that limits stop being something you think about. The published caps are here.
What to leave behind
- The second jacket. One shell over one mid layer covers more weather than two mid-weight jackets.
- The third pair of shoes. There is no trip where the third pair earns its 6 L.
- Full-size toiletries. Decant, or buy solids.
- “Just in case” clothing. Anything packed for a scenario you cannot name is a scenario that will not happen. Almost everything can be bought at the destination.
- Books, unless you are actually going to read them. A paperback is a kilo and a liter. An e-reader is neither.
- The travel towel, usually. Hotels and most hostels provide one. Check first rather than packing it by reflex.
Getting it in the bag
Order matters more than technique. Shoes and heavy items at the bottom and against the back panel, so the load sits over your hips rather than pulling away from your shoulders. Clothing in the middle. Anything you need in transit — documents, electronics, the quart bag — in the outermost pocket you can reach without opening the main compartment.
Packing cubes are worth their weight on a trip of this length, mostly because they stop the bag becoming an excavation site by day three. Our cube ranking is here and it is honest about what cubes do and do not do — they organize, they do not create space. The full method is in the week-in-a-carry-on guide.