British Airways carry-on size

BA calls the full-size carry-on the 'cabin bag' (its 'hand bag' is the smaller under-seat item - see personalItem; BA's naming is reversed from most US carriers). Official wording, confirmed identical across all 5 published fare-tier accordions (Economy Basic, Economy, Premium Economy, Business, First): 'Cabin bag: 1 cabin bag; Max dimensions of 56 x 45 x 25cm (22 x 18 x 10in) - including wheels and handles; You must be able to lift your cabin bag into the overhead compartment unassisted; No valuables, electronics or essential medicines; May need to go in the hold.' weightLb is null: the current page (captured via Wayback 2026-04-20, page component metadata dated 2026-04-09) publishes NO numeric weight limit for the cabin bag anywhere in ~24KB of extracted text - only the qualitative 'must be able to lift ... unassisted' test (with an explicit carve-out: 'Customers with accessibility needs that prevent them from lifting their own baggage are permitted to bring a cabin bag that an able-bodied adult would reasonably be able to lift'). GOTCHA (flagged for QA): an earlier Wayback capture of BA's PRE-REDESIGN baggage-essentials page (captured 2025-01-12, old URL en-gb/information/baggage-essentials, before the site's mid-2025 redesign moved this content to /content/information/baggage-essentials) displayed a 3-card summary showing 'Cabin bag ... Up to 23kg (51lb)' - but that SAME old page's Hand bag card and its Checked-baggage/Economy card both showed the identical 'Up to 23kg (51lb)' figure too, strongly suggesting a templating/copy-paste artifact (the checked-bag Economy weight limit bleeding into the other two cards) rather than a genuine cabin-bag weight rule. The current, far more detailed, per-fare-tier page never states a cabin-bag or hand-bag weight anywhere (every 'kg'/'lb' occurrence on the current page is exclusively in checked-bag or overweight-fee context) - treated as the authoritative current answer; weightLb recorded as null rather than repeating the old figure. linearIn (50) is DERIVED (22+18+10); BA does not publish a combined linear-inch cabin-bag limit. dimCm (56/45/25) and dimIn (22/18/10) are both BA's own officially published figures (not a raw 2.54 conversion of each other, though within this project's 5.5% tolerance).

This is BA's 'hand bag' (the smaller under-seat item; BA's full-size carry-on is the separately named 'cabin bag' - see carryOn). Official wording, identical across all 5 fare-tier accordions: 'Hand bag: 1 hand bag; Max dimensions of 40 x 30 x 15cm (16 x 12 x 6in); Must easily fit under the seat in front of you; May contain essentials like medication, mobile phones, other electronic devices and passports; Guaranteed in the cabin.' Free on every fare including Economy Basic. No weight limit is published for the hand bag (same 'no numeric weight, only a size/fit test' pattern as the cabin bag).

A full carry-on is allowed on British Airways' lowest fare.

BA's cheapest fare is officially named 'Economy Basic', headed on the official page as 'Economy Basic (hand bag and cabin bag only)'. UNLIKE United, Frontier, or Air France's equivalent basic fares, BA's Economy Basic is NOT restricted to a personal-item-only cabin allowance: it includes BOTH the free hand bag (40x30x15cm, under-seat) AND the free full-size cabin bag (56x45x25cm, overhead bin) - identical to every other BA fare tier. The ONLY thing Economy Basic excludes is checked baggage (official: 'No checked baggage'); a checked bag must be purchased separately at dynamic, destination-dependent pricing. This is the opposite pattern from United/Frontier (where the cheapest fare drops the full carry-on down to a personal-item-only allowance) and instead matches Delta's approach (cabin bag allowance never restricted by fare) - do not assume a single 'basic economy always loses the carry-on' rule across carriers.