UA · United States · Full-service

United Airlines Personal Item Size

Exact personal item rules for United Airlines, verified against the airline's own published policy on 2026-04-14.

Quick answer

Yes, a standard backpack, tote, or laptop bag fits as a personal item on United Airlines as long as it measures under 17 x 10 x 9" (43 x 25 x 22 cm) and fits fully under the seat in front of you.

On Basic Economy fares, the personal item may be the ONLY bag you are allowed to bring on board without paying extra, so size matters.

Personal Item

Max dimensions (in)
17 x 10 x 9"
Max dimensions (cm)
43 x 25 x 22 cm
Included
Yes, free on every fare
Basic economy
Often personal item only

Must fit under the seat in front of you.

Carry-On (for context)

Max dimensions (in)
22 x 14 x 9"
Max dimensions (cm)
56 x 35 x 22 cm
Fee
Free
Full baggage policy

Does your bag count?

Common bag types compared against the United Airlines personal item limit. Sizes are typical retail dimensions and vary by brand.

Bag type Typical size On United Airlines
Standard backpack
Everyday daypack, laptop backpack
 18 x 13 x 8" Too big
Tote bag
Canvas or leather tote
 15 x 14 x 5" Too big
Laptop bag
Messenger or slim briefcase
 16 x 12 x 4" Too big
Small duffel
Gym or weekender
 18 x 11 x 11" Too big
Purse
Handbag or crossbody
 12 x 10 x 5" Fits
Under-seat roller
Mini wheeled bag
 16 x 14 x 8" Too big

Frequently asked questions

What is the United Airlines personal item size limit?

United Airlines allows a personal item up to 17 x 10 x 9" (43 x 25 x 22 cm). Must fit under the seat in front of you.

Does a backpack count as a personal item on United Airlines?

Not always. A typical 18 x 13 x 8 inch backpack is larger than the United Airlines published personal item limit of 17 x 10 x 9", so it may be treated as a carry-on. Slimmer laptop backpacks often still fit. Measure yours before flying.

Does United Airlines weigh personal items?

Personal item weight is not published by United Airlines and is rarely enforced at the gate for US domestic flights. On international routes, especially with codeshare partners, agents may weigh bags, so keep your personal item reasonable in weight.

What if my personal item is too big for United Airlines?

If your bag exceeds 17 x 10 x 9", a gate agent can ask you to place it in the sizer. If it does not fit, you may need to pay a carry-on or checked bag fee. On Basic Economy fares, an oversized personal item is the most common cause of surprise fees.

Can I bring a personal item plus a carry-on on United Airlines Basic Economy?

Often no. United Airlines restricts Basic Economy passengers to a personal item only on many routes, with full-size carry-ons either banned or charged as a paid add-on. Read the fare rules at booking before you pack.

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Last verified 2026-04-14 against the official United Airlines policy at https://www.united.com/en/us/fly/travel/baggage/carry-on.html . Airlines change their rules without notice, so always confirm with your carrier before flying.