In general, your personal item should be smaller than your carry-on and under the specific airline's carry-on dimensions, allowing it to fit under the seat in front of you. In most cases, backpacks are considered personal items as long as they fit under the seat in front of you.
While this can be confusing, most popular airlines allow you to bring a carry-on and personal item, such as a backpack or purse. In general, your personal item should be smaller than your carry-on and under the specific airline's carry-on dimensions, allowing it to fit under the seat in front of you.
A carry on bag is your larger, primary bag, which you'll stow in the overhead bin. A backpack can be your carry on if it meets your airline's carry on size limits. A personal item is a smaller, secondary bag, which you'll stow under the seat in front of you.
Basic economy tickets are ineligible for refunds and don't include seat selection. Economy Plus features standard economy seats with extra legroom. Standard economy includes seat selection and a free carry-on. All three economy classes charge for checked bags on domestic flights.
What is basic economy on United? Basic economy is United's least-expensive economy fare class. Unlike some of the other perks (i.e. free checked bag, seat selection) included on a regular economy ticket, basic economy offers nothing extra. In addition, you'll board last and may not be able to bring a carry-on.
You're automatically eligible for a Complimentary Premier Upgrade as long as you are a Premier member (the higher your status, the earlier you become eligible for Complimentary Premier Upgrades and are flying on an eligible ticket on any eligible United-operated flight.
Usually, many airlines won't check every carry-on but will instead go for ones that look oversized. If your luggage does not fit in the sizer, you might have to pay a checked bag fee along with the gate checking fee and have your bag transferred to the airplane's cargo.
Like most other airlines, United gives its guests assigned seating on its flights. The majority of customers can select from a variety of seats for free, but there are also options for preferred seating and even upgrades for those who are willing to pay.
United Airlines (UA) allows 1 carry-on bag and 1 personal item (purse, briefcase, laptop bag) per passenger fee free. Carry-on should not exceed the following size and weight restrictions: 45 linear inches (22 x 14 x 9 in) or 115 centimeters (56 x 36 x 23 cm) including handles and wheels.
The TSA allows you to bring liquids, gels and sprays in your carry-on bag. However, the container can be no larger than 3.4 ounces (100 mL) and must be placed inside a quart-size clear, sealable bag.
Keep in mind that upgrading to Economy Plus will only net you more legroom, guaranteed in-seat power access and a seat closer to the front of the plane; it will not get you an additional baggage allowance.
Most airlines allow backpacks as carry-ons, but size and weight restrictions vary depending on the carrier. Typically, the bag must be within the cabin baggage dimensions of around 22 x 14 x 9 inches (56 x 36 x 22 cm), commonly considered the standard size for carry-on.
Your backpack will generally be allowed as a carry-on if it's under 50 liters, or about 22 x 14 x 9 inches. Get a 45-liter backpack if you want to carry as much stuff as possible on the plane with you.
Most airlines allow passengers to bring on both a carry-on and a personal item like a backpack, laptop bag, purse, briefcase, shopping bag, etc. The general rule of thumb is that your personal item is smaller in dimension than your carry-on bag and it can fit underneath the seat in front of you.