Collection: Under seat cabin bags

The 2026 Standard for Airline-Approved Underseat Cabin Bags

A great underseat cabin bag is built to meet modern airline standards while maximising space, organisation and accessibility. The 45×36×20 underseat cabin bag is now exploding in popularity across the UK, especially among EasyJet travellers seeking a smarter, lighter way to move. Its practicality has transformed underseat travel into the new essential norm.

A Rapid Shift in UK Travel Habits

This surge in underseat travel has opened a major opportunity for low-cost airlines, especially Ryanair. As passengers look for smarter ways to avoid cabin fees, demand for the Ryanair underseat cabin bag has grown dramatically. Travellers now prioritise compact formats that fit strict rules while providing maximum real-world convenience.

Our 45×36×20 Underseat Cabin Bag: Designed for Effortless Travel

Our 45×36×20 underseat cabin bag is engineered to match EasyJet’s 2026 free cabin allowance with absolute precision. This format has become essential for travellers seeking maximum space without paying extra fees. Every detail of our design is optimised to slide effortlessly under the seat while offering organisation, durability and real-world practicality for both short trips and minimalist packing.

Perfect for EasyJet Travellers

Whether you prefer a small underseat cabin bag easyJet or need a classic easyJet underseat cabin bag, our range guarantees full compliance with EasyJet rules while giving you more usable space than traditional models thanks to our unique compression system. For travelers looking for slightly larger options that still meet airline requirements, our EasyJet cabin bags 45x36x20 collection offers the perfect balance between capacity and convenience.

Our New Ryanair Underseat Cabin Bag Range

Our new Ryanair underseat cabin bags range is engineered to match the airline’s updated 2026 rules, which now allow a more generous 40×30×20 format alongside the previous 40×25×20 standard. This evolution has transformed the underseat cabin bag ryanair travellers can use, offering noticeably more freedom and practicality.

Precision Fit for Every Ryanair Seat

At TheCabinBag, each ryanair underseat cabin bag is built to slide effortlessly under the seat while maximising real packing space. Whether passengers choose the 40×25×20 or the new 40×30×20 allowance, our range guarantees full compliance without sacrificing organisation or comfort.

Why We Believe We Have the Best Underseat Cabin Bags

Our underseat cabin bags stand apart because they solve the biggest issue in compact travel: lack of space. While most bags rely on fixed capacity, our vacuum-compression system expands real packing volume without breaking airline rules. Travellers can now carry 5–7 days of clothing inside formats accepted across EasyJet, Ryanair and major UK carriers.

The Power of Vacuum-Compression

At TheCabinBag, each design uses an integrated compression layer that removes excess air, doubles usable space and keeps belongings organised throughout the journey. This unique innovation is what makes our underseat cabin bags the most efficient solution for modern, lightweight travel.

Choosing The Best Underseat Cabin Bag for Your Flight

Selecting the best underseat cabin bag begins with a few essentials: the correct size for your airline, a balanced capacity, low weight, and quick-access pockets for documents and tech. Travellers seeking smoother handling often prefer an underseat cabin bag with wheels, while backpack designs keep things lighter and easier to carry.

Matching Your Airline’s Requirements

Ryanair passengers benefit from compact formats, whereas EasyJet allows the larger 45×36×20 profile, giving more packing freedom. Choosing the model that matches your route ensures a stress-free experience and helps you make the most of every centimetre inside your underseat bag.

FAQ |   cabin underseat bags

What size is an underseat cabin bag for EasyJet?

EasyJet allows an underseat bag measuring 45×36×20 cm, which must fit entirely beneath the seat in front of you. This format is ideal for travellers who want maximum space without paying for overhead luggage. All our designs respecting this size guarantee smooth, stress-free boarding.

What size is an underseat cabin bag for Ryanair?

Ryanair’s free personal item must fit 40×20×25 cm, while the updated 2026 allowance now accepts 40×30×20 cm on selected fares. Both sizes slide comfortably under the seat, and our underseat models are engineered to comply with either format.

Can an underseat cabin bag be my only cabin bag?

Yes. Most low-cost airlines allow one underseat item as your primary free bag. With efficient organisation—and especially with our vacuum-compression system—you can pack several days of clothing plus essentials without relying on overhead storage.

What can I fit inside an underseat cabin bag?

A well-designed underseat bag can hold clothing, toiletries, tech, documents, and personal items. Our compression layer maximises usable volume, making it easier to travel light without sacrificing comfort.