What Size Bag
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United bag size and carry-on rules

United’s personal item limit is 9 x 10 x 17 in (22 x 25 x 43 cm) and its carry-on limit 9 x 14 x 22 in (23 x 35 x 56 cm). On a Basic Economy ticket you get only the personal item on most routes.

Bag type

Your bag against United’s limits

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Basic Economy or Economy

What each United fare includes, as of October 2026
Basic EconomyEconomy
Personal itemYesYes
Carry-on bagOnly to South America, across the Atlantic or across the PacificYes
Checked bagsFeeFee

Premier members, those traveling with one, primary holders of a qualifying MileagePlus card and Star Alliance Gold members can bring a free carry-on on Basic Economy.

A carry-on you bring anyway on Basic Economy has to be checked, for a fee. Prepaying costs less than paying in the airport lobby, and the gate costs the most. Checked bag fees vary by route and by when you bought the ticket.

A small personal item

United’s under-seat limit is 10 inches on its middle side, where the other airlines that give a size allow 13 or 14. A bag of 17 x 13 x 8 inches, the JetBlue and Breeze limit, is 3 inches too wide for United, so measure yours. United names purses, backpacks and laptop bags as personal items.

A jacket or coat, an umbrella, a camera and food bought at the airport don’t count against your bags, and neither do a diaper bag and a breast pump, even when you travel without the child. A small purse on top of the personal item and carry-on isn’t allowed.

Gate checks and CommutAir

United can check a carry-on at the gate when the plane runs out of overhead space, when the bag is over the size limit, or when you’re over your allowance. On flights run by CommutAir, a United Express partner, you can take only one personal item on board. A bag checked at the gate on a United Express flight may come back on the jet bridge or at baggage claim. On most United flights it waits at baggage claim at your final stop.

Checked bags

United allows 62 in (158 cm) in total, which it also gives as 30 x 20 x 12 inches (76 x 52 x 30 cm), handles and wheels included. Economy and Premium Economy bags can weigh 50 lb (23 kg); Business and First bags 70 pounds (32 kg). United doesn’t accept bags over 115 in (292 cm) or 100 lb (45 kg), and a bag both oversized and overweight pays both charges.

Bag prices

For today’s bag fees, see United’s baggage page.

Common questions

Does a backpack count as a personal item on United?

Yes, United names backpacks as personal items, as long as the bag fits within 9 x 10 x 17 inches.

Can a Premier member bring a carry-on on United Basic Economy?

Yes, United lets MileagePlus Premier members and Star Alliance Gold members bring one free carry-on bag on Basic Economy.

Where we get our information from

Every limit on this page comes from United Airlines’ own baggage pages, read in October 2026. Checked against published data from United Airlines.

See all 2 sources
  • United Airlines, Carry-on bags (united.com)
  • United Airlines, Checked bags (united.com)

General guidance from airline, TSA and FAA rules, checked on the date shown. Rules change, and the airline and security officers decide on the day: check your airline before you fly.