British Airways carry-on size and weight in 2026
British Airways (United Kingdom, IATA code BA) allows cabin bags up to 56 cm long, 45 cm wide and 25 cm deep; the weight limit is 23 kg.
The dimensions include wheels, handles and outer pockets. A soft bag can usually be squeezed a little, but a hard-shell suitcase cannot lose that extra centimetre — and that is exactly when gate staff ask you to pay.
The British Airways sizer is a double one: besides the main space there is a slot for a small personal item of 40×30×15 cm.
Instead of guessing, open Kalibrator: pick British Airways, enter the size of your suitcase or bag and see in 3D whether it fits the sizer and where exactly it sticks out.
Source: official British Airways rules. Data as of 2026-11-03.
Frequently asked questions
What is the British Airways carry-on size?
Up to 56×45×25 cm (length × width × depth), including wheels and handles.
How much can British Airways hand luggage weigh?
Up to 23 kg.
Can I bring an extra bag on British Airways?
Yes, the sizer has a slot for a small personal item of 40×30×15 cm. A small bag or backpack that fits it is checked against that slot.
How do I check whether my suitcase fits?
Open Kalibrator with British Airways selected and enter three dimensions — the site shows your suitcase in a 3D sizer and tells you where it sticks out.
How accurate is this data?
The allowances come from the airline's official website (link below). Rules change from time to time, so check with the airline before your flight.