British Airways Carry-On Restrictions: What You Need to Know!

British Airways is one of the more straightforward airlines when it comes to cabin baggage: you get a cabin bag for the overhead bin plus a smaller “handbag” (personal item) that goes under the seat. If you stay within BA’s published dimensions and pack in a way you can lift your own bag, you’re typically in good shape.

For quick cross-airline comparisons, you can reference my guide to airline carry-on luggage rules.

British Airways carry-on rules at a glance

• Cabin bag size: 56 × 45 × 25 cm (22″ × 18″ × 10″), including wheels and handles
• Personal item size: 40 × 30 × 15 cm (16″ × 12″ × 6″)
• Pieces allowed: 1 cabin bag + 1 personal item (including hand-baggage-only/Economy Basic)
• Weight: You must be able to lift your cabin bag into the overhead compartment yourself
• Liquids: 100 ml containers inside one clear, resealable bag up to 20 × 20 cm (roughly 1 liter)

British Airways carry-on size limit (cabin bag)

British Airways’ maximum cabin bag size is 56 × 45 × 25 cm, and that measurement includes wheels and handles.

Two practical notes that help avoid surprises:

• Measure your bag when it’s fully packed (stuffed front pockets and expanded zippers are what usually push bags over the line).
• Even a compliant bag may be gate-checked on full flights if overhead space runs out.

British Airways personal item size (handbag)

BA’s personal item (they call it a “handbag”) can be up to 40 × 30 × 15 cm and must fit under the seat in front of you.

This is the bag to use for things you don’t want separated from you (passport, medication, laptop, chargers).

British Airways carry-on size limits are displayed when you check-in

British Airways Carry-On Weight Limit

British Airways’ practical rule is simple: you must be able to lift your cabin bag into the overhead compartment without assistance.

If you’re looking for a number, many travel guides cite 23 kg (51 lb) as the maximum weight for a cabin bag and a personal item. In practice, most travelers hit the “can I lift this safely?” limit well before that—especially with a roller bag.

Recommended Carry-On Bag for British Airways

The Travelpro Maxlite 5 International Expandable Carry-On Spinner (19″) is a strong match for BA because it’s compact for international standards, lightweight for a spinner, and easy to maneuver through terminals and train stations.

Manufacturer dimensions:

• Overall dimensions: 21.75″ H × 15.75″ W × 7.75″ D (includes wheels and carry handles)
• Case dimensions: 19″ H × 15″ W × 7.75″ D

Practical tip: Keep it unexpanded for carry-on travel. Expansion and overstuffed exterior pockets are how “fits on paper” turns into “doesn’t fit at the gate.”

Our Pick

Maxlite 5 International Carry-on Spinner (19-Inch ) | by Travelpro

Sized to meet carry-on limits for a wide range of international airlines.

Overall Dimensions (includes wheels and carry handles):

H: 21.75 in. W: 15.75 in. D: 7.75 in.

Buy on Amazon Buy on Travelpro.com

Rules for Small Regional Aircraft

If you are flying one of British Airways’ regional planes, such as an Embraer 190, it may not be possible to carry your hand baggage on board, even if it has the correct dimensions and weight. If this is the case, BA will check it in and carry it in the hold, free of charge.

If you want to make sure your bag will fit, check out this article on the best carry-on bags for regional jets.

British Airways Carry-On Liquid Policy

Liquids are governed by airport security rules, and BA summarizes the standard approach clearly:

• Each liquid must be in a container of 100 ml (3.4 oz) or less
• All liquids must fit in a single transparent, resealable bag up to 20 × 20 cm (roughly 1 liter)
• You may need to remove the liquids bag for screening

BA also notes that some UK airports use newer scanners that may allow liquids to stay in your bag, but you can’t choose your lane—so packing to the standard rule is still the safest play.

British Airways Pet Policy

As a general rule, British Airways does not allow pets, including emotional support animals, in the main cabin, they must travel in the holding area. However, they will allow recognized service dogs to travel with you.

British Airways Carry-On Size and Fees

British Airways does not charge a fee for carry-on baggage that meets their size requirements. If your bag is too large and does not meet British Airways’ carry-on restrictions, you may be charged a fee to gate-check it.

Here is a link to British Airways’ Carry-On page to ensure you have the most up-to-date information.

Tim White

Tim White is the founder of milepro.com, a luxury travel resource featured in CNBC, Travel & Leisure, and other major media outlets. With over 2 million miles flown and 30+ years of business travel experience, he holds Hyatt Globalist, Marriott Lifetime Titanium, and Hilton Diamond status — and has spent years decoding the world of luxury hotel programs, preferred partner benefits, and miles & points optimization so you don’t have to.