Abstract: A child seat for removable attachment to a suitcase includes a collapsible frame structure formed and configured to support a seat base, a back rest, opposite arm rests, and a front leg support extending downwardly from the seat base. A size adjustable harness for securing a child in the seat is fitted to the frame structure on the seat base. Elongate strap members extend from the frame structure and include an upper pair of strap members and a lower pair of strap members, wherein strap segments of each pair of strap members are attachable by clips to form a closed loop about the suitcase. An adjustment fitting enables the strap members to be tightened in order to secure the child seat to the suitcase, thereby permitting the user to conveniently transport the suitcase and seated child, as a unit, through an airport, hotel, along a sidewalk or the like.