Cabin Luggage Size Guide: What UK Airlines Allow in 2026
You're about to go on holiday and everything is ready, from passports to rentals. However, one more thing is left on the to-do list: packing. But how big can cabin luggage be? Picking the right carry-on can be complicated with airline restrictions varying from small underseat bags to larger suitcases with expandable pockets. If you don't want to deal with checked suitcases, our carry-on luggage size guide will help you decide how to pack and what to expect at the gate. Avoid pesky fees by staying informed!
Last updated: April 2026.
UK Airline Cabin Bag Size Rules at a Glance
Rules and dimensions are subject to change. Always check your airline's website before you travel.
Standard Airlines Cabin Baggage Rules
Most of these flights allow a cabin bag and a smaller personal item. Find the restrictions for cabin baggage size for the most popular airlines below.
British Airways Cabin Bag Size
One underseat bag measuring 40 x 30 x 15 cm and one soft cabin bag measuring 56 x 45 x 25 cm with a maximum weight of 23 kg. British Airways has the most generous policy of the standard airlines, with a bigger cabin suitcase and a higher weight allowance. On busy flights, the overhead bag may be placed in the hold at no extra charge if locker space runs out.
Virgin Atlantic Cabin Bag Size
One underseat bag measuring 40 x 30 x 15 cm and one suitcase measuring 56 x 36 x 23 cm with a maximum weight of 10 kg for Economy and Premium passengers. Travellers in higher flight classes can enjoy a more generous allowance of two cabin bags with a combined weight of up to 16 kg.
TUI Airways Cabin Bag Size
One underseat personal item measuring 40 x 30 x 20 cm and one overhead cabin bag measuring 55 x 40 x 20 cm with a maximum weight of 10 kg. Both are included on every ticket for passengers aged 2 and over.
Jet2 Cabin Bag Size
One underseat bag measuring 40 x 30 x 20 cm and one full-size cabin bag measuring 56 x 45 x 25 cm with a maximum weight of 10 kg - included as standard on every fare. This makes Jet2 one of the most generous airlines when it comes to cabin luggage.
Budget Airlines Cabin Bag Size Rules
What size of carry-on bag is allowed for free on budget flights? Here are the limits for the most popular low-cost airlines.
EasyJet Cabin Bag Size
One underseat bag measuring 45 x 36 x 20 cm with a 15 kg weight restriction. EasyJet's free underseat allowance is the most generous of the budget airlines in terms of size. A larger cabin bag of up to 56 x 45 x 25 cm can be added for a fee and goes in the overhead locker. The Jetset (45x33x20cm) slots in perfectly without any last-minute gate-side panic.
Ryanair Cabin Bag Size
One underseat bag measuring 40 x 30 x 20 cm without weight restrictions. If you purchase Priority, you can also bring a larger cabin bag of up to 55 x 40 x 20 cm in the overhead locker. The Jetset 40cm suitcase (40x30x20cm) is built to Ryanair's exact underseat dimensions, so you can board with confidence.
Wizz Air Cabin Bag Size
One underseat bag measuring 40 x 30 x 20 cm with a 10 kg weight restriction. Passengers who purchase WIZZ Priority can also bring a trolley bag of up to 55 x 40 x 23 cm in the overhead compartment. The Vacay 20" suitcase (55x35x23cm) fits comfortably within that allowance.
Takeaways about Luggage Dimensions
Most airlines have a metal gauge at the gate to check the size of passengers' luggage. They usually won't check every suitcase or bag, but on busy flights they might - so it's always worth measuring properly before you leave home.
The 100ml liquids rule is worth keeping in mind for cabin-only travellers. Any liquids, gels or creams in your hand luggage must be in containers of 100ml or less, all fitting into a single clear resealable plastic bag of no more than one litre.
Lugg Cabin Bags That Fit UK Airline Rules
LUGG has plenty of useful solutions for making the most of your luggage allowance. Our suitcase with removable wheels is an excellent solution for taking a suitcase on board that you can slide under the seat in front of you - gaining you up to 5cm at the push of a button.
Disclaimer: Airline baggage policies are subject to change at any time. Always check your airline's official website before travelling to confirm the latest allowances and avoid unexpected fees at the gate.
