United Airlines Carry On Bag Dimensions and Restrictions
United Airlines allow one carry on bag plus one personal item to be taken on board the aircraft.
The maximum combined linear measurement (length + width + height) of carry on bags must not exceed 45 inches (114cm). For example 14 x 9 x 22 inches, 14 + 9 + 22 = 45 inches.
22 cm x 35 cm x 56 cm, 22 + 35 + 56 = 113cm
Any item in excess of carry on baggage size allowance will be checked to your final destination and may be subject to the applicable checked baggage charge.
All carry on items must be stowed under the seat in front of you or in the overhead locker.
In addition to the one carry on item allowed United allows one personal item such as a shoulder bag, backpack, laptop bag or an item of similar size which must not exceed the cabin bag dimension restrictions.
The following items are allowed in addition to your one bag and one personal item allowance.
A coat or outer garment, umbrella and camera.
Child restraint seat meeting FAA approval standards.
A reasonable amount of duty free merchandise or food that was purchased in the airport.
Assistive devices such as a cane, one set of crutches, a collapsible wheelchair, prescription medications and any medical devices needed to administer the medications.