Van de enig echte site van United over de handbagage:Verder mag je een koffer inchecken die niet zwaarder mag zijn dan 23 kilo.United Airlines will permit one bag plus one personal item (see below), per customer to be carried on the aircraft.
The maximum combined linear measurement (length + width + height) of carry-on bags must not exceed 14 inches x 9 inches x 22 inches (23 x 35 x 56 cm) or 45 linear inches (114 cm).
Please note: All carry-on items must be stowed under the seat in front of you or in the overhead bin. Items may not be stowed in the seat back pocket. Any item in excess of carry-on baggage size or allowance requirements as listed above will be checked to your final destination and may be subject to applicable checked baggage fees.