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A 40x20x25 cm Ryanair cabin bag may seem easy to find, but many travellers only check the external dimensions. That can cause problems when you’re boarding. A bag that’s overfilled, holds its shape or won’t fit under the seat may still be treated as extra luggage.
This guide will help you choose a Ryanair underseat bag, small cabin bag or compact travel bag based on features you can check.
A soft bag may fit within the stated dimensions when it’s empty, but can bulge when packed with shoes, wash bags or electronics. So check not only the dimensions, but also whether the bag is flexible enough to slide under the seat.
On Ryanair flights, a small personal bag is usually placed under the seat. Always check the airline’s latest baggage rules before travelling, as conditions can change.
Some bags are described as water-repellent or weather-resistant. This usually means they can keep out light rain for a short time. It doesn’t guarantee protection in a heavy downpour or during prolonged exposure to water.
For example, the Kono bag is explicitly described as not water-resistant. If it rains, use a separate rain cover or protect important items in a waterproof bag.
A capacity of 20 litres sounds generous, but the available space depends on the layout and shape of the bag. A bag with one large compartment may hold more clothes, while several pockets can make it easier to organise your passport, boarding pass and chargers. So consider the capacity, zips and carrying comfort together.
For a 40x20x25 cm Ryanair cabin bag, these three measurements are the first things to check:
Check how the manufacturer lists the dimensions. Remember to account for handles, side pockets and any attachment straps. A bag may have the right dimensions on paper but still bulge on the outside if its front pocket is full.
A lightweight cabin bag is useful when you want to stay close to the maximum baggage allowance. According to its product information, the Kono Cabin Holdall weighs 0.36 kg and has a stated capacity of 20 litres. That gives you room for clothes, shoes and everyday essentials on a short trip.
For a weekend flight bag, a practical starting point could be:
Roll your clothes and put heavier items at the bottom. This will help the bag keep its shape and make better use of the space.
A cabin bag with a shoulder strap is handy when you’re walking through an airport or travelling by public transport. Handles are useful when placing the bag under the seat, while an adjustable shoulder strap helps distribute the weight.
A rear luggage strap that slips over a trolley handle can make changing flights easier. Also check whether the bag has:
Why it suits this travel style: The dimensions are clearly stated, and the bag is designed for short flights, weekend breaks and budget airlines. Its 20-litre capacity offers a practical amount of space for personal belongings.
The product information gives the dimensions as 40 x 20 x 25 cm and the weight as 0.36 kg. Bear in mind that the bag isn’t water-resistant.
20-litre capacity, adjustable shoulder strap, handles, front pocket and a strap for attaching the bag to a trolley.
Why it suits this travel style: This backpack is designed for everyday use at work, during your studies and in your free time. It’s a good choice if you want one bag that’s useful beyond the airport too.
The stated dimensions are 40 x 30 x 18 cm. This means the backpack isn’t automatically suitable as a 40 x 20 x 25 cm Ryanair underseat bag; check the airline’s current requirements carefully.
24-litre capacity, padded shoulder straps, padded back panel and a large main compartment with a front pocket.
Why it suits this travel style: This compact shoulder bag is ideal if you’re only taking a few items, such as a phone, documents, power bank and water bottle.
The dimensions are 34 x 13.5 x 18.5 cm, so the bag is within the stated maximum size. According to the product information, its water-repellent finish is splash-resistant, not waterproof.
Adjustable shoulder strap, handle, several zipped pockets and reflective details for use in low-light conditions.
Measure the bag at home once it’s packed with the things you’ll actually take. Then check that it fits under a table or chair of a similar size. Don’t overfill the front pocket, as pockets that stick out can affect the overall dimensions.
Also check:
A bag described as suitable for Ryanair isn’t automatically accepted on every flight or by every airline. The final decision rests with the airline and airport staff.
We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and the current European safety regulations.
Not necessarily. The bag must also stay within the permitted dimensions when packed and fit under the seat in front of you. Check Ryanair’s current rules and make sure side pockets or handles aren’t sticking out.
For a short trip, you can usually fit a few changes of clothes, underwear, a compact wash bag and small electronic devices. Shoes and thick jumpers take up quite a lot of room. Roll your clothes and use small packing bags to keep the available space organised.
It depends on your trip. A shoulder bag gives you quick access to documents and often has a wide opening. A backpack distributes the weight across both shoulders. For a weekend flight bag with clothes, a compact style with handles and a shoulder strap is often a practical compromise.
