THE GENERAL IATA (INTERNATIONAL AIR TRANSPORT ASSOCIATION) GUIDELINE FOR HAND LUGGAGE DIMENSIONS
The general IATA (International Air Transport Association) guideline for hand luggage dimensions is: height + width + thickness ≤ 115 cm. However, individual airlines have their own guidelines with regard to the weight and dimensions of hand luggage. Airlines may also change the guidelines without having to give a reason. Always check the airline website before departure therefore.