For British Airways (BA) Economy passengers (Euro Traveller and World Traveller) in 2026, the cabin allowance is surprisingly generous compared to low-cost rivals. Every passenger is entitled to two bags: one large cabin bag and one small personal item (such as a laptop bag or handbag). The large cabin bag can be up to 56cm x 45cm x 25cm (including handles and wheels), and the small personal item can be up to 40cm x 30cm x 15cm. A key "gold standard" feature of BA's policy is the weight limit: each of these bags can weigh up to 23kg (51lbs). This is one of the highest weight allowances in the industry, designed to allow travelers to carry heavy electronics or books without fear of excess fees, provided they can lift the bags into the overhead locker themselves. If you have booked a "Basic" (Hand Baggage Only) fare, these are the only bags you are allowed without paying extra. If the flight is very full, the crew may ask you to "gate-check" your larger bag for free, so it is a pro-tip to keep your essentials and medications in the smaller bag that is guaranteed to stay with you under the seat.