How to Pack a Carry-On Only (and Never Check a Bag Again)
Checking a bag means queuing at drop-off, waiting at the carousel, and risking lost luggage. It also means paying fees that keep rising every year on budget airlines.
The good news: with the right technique and a set of compression packing cubes, you can fit a week's worth of clothing into a carry-on suitcase. This guide shows you exactly how.
TL;DR - Carry-On Packing
- Use compression packing cubes to reduce clothing volume by up to 30%.
- Roll, do not fold. Rolling saves space and reduces creasing.
- Pack by category: one cube per clothing type.
- Wear your bulkiest items on the plane (coat, boots, heavy jumper).
- Plan outfits that mix and match rather than packing complete looks.
- Check airline size limits before you pack.
UK Airline Carry-On Sizes (2026)
Before you pack, know exactly what your airline allows:
| Airline | Carry-On Size | Weight Limit | Notes |
|---|---|---|---|
| British Airways | 56 x 45 x 25 cm + personal item 40 x 30 x 15 cm | 23 kg combined | Included on most fares (not Basic) |
| easyJet (free) | 45 x 36 x 20 cm | 15 kg | Under-seat, included on all fares |
| easyJet (large, paid) | 56 x 45 x 25 cm | 15 kg | From £5.99, includes Speedy Boarding |
| Ryanair (Priority) | 55 x 40 x 20 cm | 10 kg | Must have Priority to bring overhead bag |
| Ryanair (Basic) | 40 x 30 x 20 cm | No weight limit | Under-seat personal item only |
| Jet2 | 56 x 45 x 25 cm | 10 kg | One cabin bag included |
| TUI | 55 x 40 x 20 cm | 10 kg | One cabin bag included |
| Wizz Air | 40 x 30 x 20 cm | 10 kg | Larger bag requires WIZZ Priority |
Important: these limits change frequently. Always check your airline's website before flying. Sizes include handles and wheels.
The Carry-On Packing Strategy
1. Plan your outfits before you pack
The biggest carry-on mistake is packing individual items instead of outfits. Lay out complete outfits for each day, then look for items that work across multiple looks.
Aim for:
- A neutral colour palette (navy, black, white, grey) with one or two accent pieces
- Tops that work with multiple bottoms
- One pair of versatile shoes that works for both daytime and evening
- Layers rather than heavy standalone pieces
2. Use the 5-4-3-2-1 rule
For a week-long trip:
- 5 tops (mix casual and dressy)
- 4 bottoms (trousers, shorts, skirt)
- 3 pairs of shoes (wear the bulkiest pair)
- 2 dresses or layering pieces
- 1 jacket or coat (wear it on the plane)
3. Roll everything
Rolling clothes saves more space than folding and reduces creasing for most fabrics. Lay items flat, fold in sleeves or sides, then roll tightly from the bottom up.
Exceptions: fold structured items like dress shirts and blazers to maintain their shape.
4. Pack with compression cubes by category
This is where the real space savings happen. The Cube Packer set of 4 compression cubes (1 x Large, 2 x Medium, 1 x Small) is designed to organise a full carry-on by category:
| Cube | Size | Contents |
|---|---|---|
| 1 x Large | 45 x 30 x 8 cm (10.8L) | 4 bottoms (trousers, shorts, skirt) + 1 jumper |
| 1 x Medium | 30 x 22 x 8 cm (5.3L) | 5 rolled tops |
| 1 x Medium | 30 x 22 x 8 cm (5.3L) | Underwear, pyjamas, activewear |
| 1 x Small | 30 x 18 x 8 cm (4.3L) | Socks, swimwear, accessories |
After zipping the main compartment, use the compression zip to reduce bulk. The cubes stack flat, creating a structured, space-efficient suitcase.
Read: How to use compression packing cubes (tutorial)
5. Wear your bulkiest items
Your coat, heaviest shoes, and thickest jumper should go on your body, not in your case. This alone can save 2-4 litres of suitcase space and 1-2 kg of weight.
6. Downsize your toiletries
Full-size bottles are carry-on killers. Switch to:
- Travel-size containers (under 100ml for airport security)
- Solid toiletries (shampoo bars, solid deodorant)
- Multi-use products (tinted moisturiser with SPF, 2-in-1 shampoo)
How to Layout Your Carry-On
Once everything is in cubes, stack your case in this order:
- Bottom (wheels end): Shoe bag with one pair of shoes
- Middle: Large and medium compression cubes (flat)
- Upper middle: Small cubes, toiletry bag
- Top: Laundry bag (empty, laid flat, ready for worn clothes during the trip)
- Lid pocket: Passport, phone charger, headphones, documents
Sample Carry-On Packing List: 7 Days in Europe
| Category | Items | Cube |
|---|---|---|
| Tops | 2 trousers, 1 shorts, 1 skirt, 1 light jumper | Large |
| Bottoms | 3 t-shirts, 1 blouse | Medium (1) |
| Underwear & sleepwear | 7 pants, 2 bras, pyjamas, 1 activewear set | Medium (2) |
| Socks & swimwear | 7 pairs of socks, 1 swimsuit, accessories | Small |
| Shoes | Walking shoes (worn), sandals (in shoe bag) | Shoe bag |
| Outerwear | Light jacket (worn on plane) | Worn |
| Toiletries | Travel-size liquids, toothbrush, medications | Toiletry bag |
All of this fits in a standard 55 x 40 x 20 cm carry-on with compression packing cubes.
Getting Through Airport Security Faster
A well-packed carry-on also speeds up security. When your case is organised:
- Liquids bag is easy to reach (pack in lid pocket or on top)
- Electronics can be accessed without unpacking everything
Frequently Asked Questions
How do you pack everything in a carry-on?
Use compression packing cubes to reduce clothing bulk, roll clothes instead of folding, wear your bulkiest items on the plane, and pack by category. A set of 4 compression cubes can hold 5-7 days of clothing in a standard carry-on suitcase.
What size is a carry-on for UK airlines?
UK airline carry-on sizes vary. British Airways, Jet2 and the easyJet large cabin bag are 56 x 45 x 25 cm. Ryanair Priority and TUI use 55 x 40 x 20 cm. The free easyJet under-seat bag is 45 x 36 x 20 cm, while Ryanair Basic and Wizz Air free allowances are limited to a 40 x 30 x 20 cm under-seat bag. Always check your specific airline before you fly.
How many outfits can you fit in a carry-on?
With compression packing cubes and rolled clothing, most people can fit 5-7 full outfits plus underwear, sleepwear, and a light jacket in a standard carry-on. The key is choosing versatile pieces that mix and match.
Do compression packing cubes help with carry-on packing?
Yes. Compression cubes reduce the volume of soft clothing by 30-50%, which can be the difference between everything fitting or needing to check a bag. They also keep your carry-on structured so nothing shifts in transit.
What should you not pack in a carry-on?
Liquids over 100ml, sharp objects, and items restricted by airport security must go in checked luggage or be left at home. Beyond regulations, avoid packing bulky coats (wear them instead), full-size toiletries (use travel sizes), and more shoes than you need.
Pack Light, Travel Better
Switching to carry-on only saves money on baggage fees, saves time at the airport, and makes your entire trip lighter and more flexible. With compression packing cubes and a bit of planning, it is easier than you think.
