It depends whether you travel with handbag only ( usually 7-8 kilos and dimensions 56cm X 45cm X 25cm) or with a luggage 23 kilos. However each company has its own limitations on baggage equipment so we can always inform you for your booked flights.
We strongly recommend bringing a backpack or duffel bag, as suitcases can be cumbersome and difficult to store in buses, under seats, etc..