How much baggage can I carry with me into the passenger cabins?

All passengers boarding the aircraft can carry on one or more pieces so long as they fit under the passenger’s seat, in the overhead compartment or other approved storage area, e.g., closets for hang-up garment bags. If available storage space is important to your baggage-carrying needs, inquire at the terminal regarding storage areas for carry-on baggage before checking your baggage for a particular flight. As a guideline carry-on bags should not exceed 45 linear inches (length + width + height = 45 inches). Passengers traveling with infants can also carry on child safety seats regardless of any other baggage. Child safety seats are not required on AMC and commercial carriers, but are strongly encouraged.