Carry-On Only Packing: The 2025 Guide to Traveling with a Personal Item

Bag fees are one of aviation's most effective revenue streams. The average checked bag fee in Europe is €25–€60 each way — that's up to €120 round trip for two bags. Master carry-on packing and you can redirect that money toward better experiences.

Know Your Airline's Size Rules

Carry-on size limits vary significantly. The IATA standard (56 × 45 × 25 cm) is what most major carriers use, but budget airlines can be stricter:

Ryanair: Free cabin bag 40 × 20 × 25 cm (under seat). Priority cabin bag 55 × 40 × 20 cm (extra fee).
easyJet: 56 × 45 × 25 cm carry-on (free for Plus/FLEXI fares, paid for others).
Wizz Air: 40 × 30 × 20 cm free cabin bag. Larger 55 × 40 × 23 cm requires a fee.
Air France / Lufthansa / British Airways: 55 × 35 × 25 cm standard carry-on, no extra fee on most fares.

Pro tip: Always check your specific airline's rules before packing. The checked-bag fee charged at the gate is typically 2–3× the pre-booked price.

The Rule of Three

Every item earns its place only if it serves at least three purposes. A lightweight merino wool sweater works for a cool flight, a smart evening out, and a cold-weather layering piece. A single-use beach cover-up doesn't earn its weight.

The 10-Day Carry-On Packing List

Clothing (for a warm destination):

3 × T-shirts (2 plain, 1 graphic)
2 × Lightweight long-sleeve shirts (can layer)
2 × Trousers (1 smart, 1 casual/activewear)
1 × Shorts
1 × Light jacket or packable down
4 × Underwear (synthetics dry faster than cotton)
4 × Socks (merino wool dries overnight)
1 pair sneakers (worn on plane), 1 pair sandals

Electronics:

Laptop / tablet + charger (at the top of your bag for security screening)
Universal power adapter
Small power bank (≤ 100Wh to meet airline rules)
Earbuds or headphones

Toiletries (the 100ml rule):

Decant shampoo, conditioner, and body wash into 100ml travel bottles
Solid toothpaste or toothpaste tablets (TSA-friendly)
Sunscreen SPF50 — buy a larger bottle at destination if staying more than 5 days
All liquids go in a single 1-litre clear zip-lock bag

Packing Technique: Roll, Don't Fold

Rolling clothes tightly reduces wrinkles and volume by 20–30% compared to folding. Place heavier items (shoes, electronics) at the bottom near the wheels. Use packing cubes to organize and compress clothing — they're transformative once you try them.

The "One Outfit Out, One Outfit In" Rule

On longer trips, plan to do laundry every 3–4 days. Most hotels and Airbnbs have laundry facilities or are near laundromats. Synthetics and merino wool dry in 2–4 hours hung up. This means you need fewer items than you think.

What to Wear on the Plane

Your heaviest items should be on your body: jacket, heavier shoes, jeans. This frees up significant bag space. Wear your bulkiest shoes on travel days even if they're not the most comfortable — you'll thank yourself at security.

The Financial Case for Carry-On Only

On a typical European trip with two checked bags, you might spend €120 in bag fees. Over five trips a year, that's €600. Invested in a quality carry-on suitcase (€150–€200 for a good hard shell), you break even in a single year — and gain the freedom of walking straight from the plane to the taxi.