United Airlines: battery and item rules and carry-on size limits
This page lists United Airlines's own rules that we have reviewed. They apply when United Airlines operates the flight. Security screening (TSA) and dangerous goods (FAA) rules apply on top of them; each item page lists all three.
Most recent review on this page: 2026-10-27.
United Airlines rules for items
Hand sanitizer
United Airlines policy
Allowed, with the conditions listed
Hand sanitizer on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Liquid cosmetics
United Airlines policy
Allowed, with the conditions listed
Liquid cosmetics on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Non-alcoholic beverage
United Airlines policy
Allowed, with the conditions listed
Non-alcoholic beverage on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Perfume
United Airlines policy
Allowed, with the conditions listed
Perfume on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Shampoo
United Airlines policy
Allowed, with the conditions listed
Shampoo on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Toiletry aerosol
United Airlines policy
Allowed, with the conditions listed
Toiletry aerosol on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Toothpaste
United Airlines policy
Allowed, with the conditions listed
Toothpaste on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).
- Limits
- Volume of one container: up to 3.4 fl oz (100 ml)
Also note
- Must be placed inside a quart-size clear, sealable bag.
Being rechecked: we are comparing this rule with its source again, so it is not shown. Check the official source below.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
United Airlines carry-on and personal item size
Limits are shown in the units the airline uses. Fitting the size does not mean the bag is free: fare inclusion is shown separately.
Carry-on bag, fare Not Basic Economy
| Length | 22 in (56 cm) |
|---|---|
| Width | 14 in (35 cm) |
| Height | 9 in (23 cm) |
| Length + width + height | Not mentioned on the airline's page |
| Weight | Not mentioned on the airline's page |
| Number of bags | 1 |
Being rechecked: we are comparing this rule with the airline's page again, so it is not shown.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Carry-on bag, fare Basic Economy
| Length | Not checked yet |
|---|---|
| Width | Not checked yet |
| Height | Not checked yet |
| Length + width + height | Not checked yet |
| Weight | Not checked yet |
| Number of bags | Not checked yet |
Being rechecked: we are comparing this rule with the airline's page again, so it is not shown.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Personal item, fare Not Basic Economy
| Length | 17 in (43 cm) |
|---|---|
| Width | 10 in (25 cm) |
| Height | 9 in (22 cm) |
| Length + width + height | Not mentioned on the airline's page |
| Weight | Not mentioned on the airline's page |
| Number of bags | 1 |
Being rechecked: we are comparing this rule with the airline's page again, so it is not shown.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Personal item, fare Basic Economy
| Length | Not checked yet |
|---|---|
| Width | Not checked yet |
| Height | Not checked yet |
| Length + width + height | Not checked yet |
| Weight | Not checked yet |
| Number of bags | Not checked yet |
Being rechecked: we are comparing this rule with the airline's page again, so it is not shown.
Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.
Check an item for a United Airlines flight
The item checker combines United Airlines's rules with the security screening and dangerous goods rules for your item. For batteries, the Wh calculator works out the watt-hour rating.
Official sources
This page lists rules as the official sources state them, for travel departing the United States. It is not a decision about your item: security officers and your airline make the final call, and rules can change after the review dates shown. Destination customs and quarantine rules are not checked. See the terms and disclaimer.