British Airways carry-on size and weight rules (2026)
Here are British Airways's carry-on rules for a standard Economy ticket, straight from the airline's page.
| Overhead cabin bag | 56 x 45 x 25 cm |
|---|---|
| Weight | Not stated on the page we checked |
| Under-seat item | Handbag or backpack up to 40 x 30 x 15 cm |
Good to know
- Cabin bag up to 56 x 45 x 25 cm (22 x 18 x 10 in), including wheels and handles. It may need to go in the hold.
- Power banks and spare batteries are forbidden in checked bags. Keep them in your under-seat bag.
Power banks
Current rule: Power banks and spare batteries are forbidden in checked bags and must be in hand baggage, ideally your under-seat bag. Source.
Check your bag against every airline
Source
British Airways: official carry-on page (checked 15 Oct 2026). Allowances vary by fare, route, cabin and frequent-flyer status, so check your booking.