How to Pack into a Small Backpack: A Cabin Survival Guide with Zero Luggage Fees

When buying a flight ticket with any airline—in my case, usually ultra-low-cost carriers like Ryanair, Wizz Air, Scoot, TAP Portugal, etc.—a giant warning pops up: "Your ticket only includes a small personal item measuring 40x25x20 cm." Most people immediately panic, shell out an extra $80 for a large suitcase, and then waste an hour waiting at the baggage carousel. I still know crazy people who cannot imagine leaving their 25-lb (11 kg) suitcase behind, sometimes even packed well over 45 lbs (20 kg). Yet, packing into a single backpack is completely doable and, frankly, way more convenient. It just takes a system and letting go of the "what if I happen to need this" syndrome.

1.Packing Technique: Forget Folding, Start Rolling!

Forget folding your clothes into neat little squares like your mom taught you. Standard stacks take up way too much space and get wrinkled instantly in a backpack. Instead, tightly roll every single t-shirt, pair of pants, and piece of underwear into a firm, compact cylinder.

2.The Heaviest Clothing Rule

Everything that takes up the most space and weighs the most must be worn on your body while passing through the airport gate.

• How to do it: Wear your hiking boots or heavier sneakers, your warmest hoodie, a jacket, and my favorite versatile zip-off pants directly onto the plane.
• What goes inside: Your backpack will then hold only lightweight technical shirts (which you can quickly rinse in the sink at night, and they'll be dry by morning), a spare pair of shorts, underwear, and swimwear. As soon as you clear the boarding gate and step onto the plane, you can easily take off your jacket and hoodie.

3.The Cosmetic Purge and Liquids

A bulky toiletry bag is the ultimate enemy of a personal item backpack. Most people drag products with them completely unnecessarily.

• Solid Cosmetics: Swap liquid shampoos and shower gels for solid soap and shampoo bars. Not only will they never leak inside your bag, but they also don't count toward your airport liquid limits.
• Buy the Rest on the Ground: You can grab toothpaste, sunscreen, or body lotion at any local convenience store at your destination for a few bucks right after you land. Plus, the vast majority of hotels and Airbnb rentals provide complimentary soap in the bathroom. Don't haul it from home.

My Israel Reality Check: I dealt with this exact packing dilemma during our very first independent trip to Israel. Back then, I didn't have the proper minimalist training. I packed cosmetics for every single day, three spare pairs of shoes, heavy cotton hoodies, and a hair dryer because I lived in a complete illusion that I couldn't survive without them 😂. The result was a suitcase heavy as hell that made my back ache before we even left the Prague airport. I didn't even touch half of the clothes during the entire trip. It was a fantastic lesson—since then, I know that less is more, and the hair dryer and heavy items stay strictly at home. These are the exact travel experiences everyone just has to go through. 🙂

The Quick Backpack Packing Checklist

• Does the backpack match the free personal item dimensions?
• Is the backpack soft and squishable if needed?
• Is all clothing rolled into tight cylinders?
• Are you using packing cubes for better organization?
• Are your heaviest clothes and shoes ready to be worn onto the plane?
• Have you swapped liquid cosmetics for solid alternatives?
• Did you ditch items like hair dryers, heavy towels, and paper books?

A Final Word

Traveling with a single backpack grants you an incredible sense of freedom. You land in a foreign country, step off the plane, and walk straight out of the airport to explore the city without dragging a heavy, wheeled box over cobblestones in historic town centers. No check-in lines, zero anxiety about the airline losing your luggage. Try it just once, and you will never go back to suitcases. Happy space hunting and may your packing go smoothly!

Frequently Asked Questions (FAQ)

What are the allowed dimensions for a free backpack?

It varies slightly by airline (e.g., Ryanair is 40x25x20 cm), but the general rule of thumb is that the backpack must easily fit under the seat in front of you.

What if my backpack is a few centimeters over the limit?

If your backpack is soft and not packed to the absolute bursting point, airport staff rarely look twice. If they check it, you can easily use brute force to push it into the measuring sizer.
What liquids can I take in a carry-on backpack?

All liquids (creams, perfumes, pastes) must be in containers with a maximum volume of 100 ml, and they must all fit comfortably into a single, transparent, resealable 1-liter plastic bag.

Can I bring food and snacks onto the plane?

Yes, standard solid foods (cookies, baguettes, sandwiches, jerky) can be packed in your bag. Just watch out for liquid or gel-like items like yogurts or honey, and avoid packing overly pungent things like Romadur cheese or Durian fruit—those won't make it through security or will get you banned by your seatmates!

What is best left at home to keep the backpack light?

Definitely leave behind standard heavy towels (swap them for microfiber), hair dryers (usually provided at your stay), heavy paper books (download them to your phone/Kindle), and excessive cosmetic supplies.