British Airways Sizer Limits Overview
Major CarrierPersonal Item
Under-seat bag. Generous weight limit of 23 kg (51 lbs) — must be able to lift it.
Carry-On Bag
Overhead cabin bag. British Airways has the most generous weight limit for carry-on in the industry: 23 kg (51 lbs) per bag.
Checked Bag
Standard checked bag weight is 23 kg. Club World/First allows 32 kg (70 lbs).
Under-seat Personal Item
Too Large (Airline max is 18x12x6 in)
Overhead Cabin Carry-On
Fits overhead bin free
Checked Hold Bag
Oversized fee applies (Exceeds 35 linear inches)
Detailed Luggage Guidelines
Here is the full breakdown of size sizer dimensions, weight caps, and carry-on/checked bag policies.
| Luggage Type | Maximum Size (Inches) | Maximum Size (Metric) | Weight Cap | Standard Cost |
|---|---|---|---|---|
| Personal Item | 18 x 12 x 6 in | 40 x 30 x 15 cm | 51 lbs (23 kg) | FREE (Fits under seat) |
| Carry-On Bag | 22 x 18 x 10 in | 56 x 45 x 25 cm | 51 lbs (23 kg) | Free for all ticket types, including Basic Economy |
| 1st Checked Bag | Max 35 linear inches | Max 89 linear cm | Max 51 lbs | $35 USD |
British Airways allows a total of 46 kg (102 lbs) of carry-on weight across your personal item and cabin bag (23 kg each). This is a massive cost-saver for moving heavy household items or books internationally.
Best bag selection: Choose a sturdy hardshell spinner (22x18x10") to withstand packing up to 51 lbs of weight safely.
Baggage Penalty & Excess Fees
Exceeding either sizer dimensions or weight caps will result in extra charges at check-in or boarding gates.
| Fee Category | Domestic US Rate | Details |
|---|---|---|
| 1st Checked Bag Fee | $35 | Basic economy fares do not include a checked bag. Regular Economy includes 1 free bag. Adding a bag to Basic Economy costs £30 - £50 online. |
| 2nd Checked Bag Fee | $55 | Standard rate for economy passengers. |
| Overweight Charge | $75 | Applies if the bag exceeds standard weight caps (e.g. 50 lbs / 23 kg). |
| Oversized Charge | $75 | Applies if the bag linear dimensions exceed 35 inches. |
For more details or to pre-book excess luggage allowances online, visit the official British Airways Baggage Page.