United includes a full-size cabin bag on every fare: 56 x 35 x 23 cm, plus a personal item of 43 x 25 x 22 cm.
| Bag | Max size | Max weight | Notes |
|---|---|---|---|
| Personal item (free) | 43 x 25 x 22 cm | — | Included on every fare including Basic Economy |
| Cabin bag (free, all fares) | 56 x 35 x 23 cm | — | On transatlantic routes a full-size carry-on IS included even in Basic Economy, unlike US domestic Basic Economy |
Checked bag on the basic fare: fare-dependent.
Rules shown are for flights to and from Europe. United's pages are JavaScript-rendered and could not be read directly; figures were confirmed from 2026-dated reputable aggregators cross-checked against United search results — treat with slightly lower confidence than the rest.
A bag packed to United's free limit (56 × 35 × 23 cm, longest side first) is compared against every other airline's free allowance, rotating the bag where needed.
Free on every fare: 56 x 35 x 23 cm, plus a 43 x 25 x 22 cm personal item.
No specific weight is published for the sizes above — the stated rule is that you must be able to lift and stow the bag yourself.
Checked 18 August 2026 against united.com. Airlines change baggage rules with little notice — the airline's own page is the authority on the day you fly.
Allowances checked 19 August 2026 against each airline's own baggage page. Rules change with little notice — the airline's page is the authority on the day you fly.