The size of the suitcase you carry on the plane.

A 45cm×30cm×70cm box can't be taken on the plane.

According to the regulations, the volume of articles carried by passengers shall not exceed "55cm× 40cm× 20cm" and the weight shall not exceed 5kg. Articles exceeding the above limit should be checked as checked baggage.

When passengers board the plane with oversized luggage, due to the limited space and carrying capacity of the luggage rack in the aircraft cabin, the oversized luggage may cause the luggage rack to open in flight, which directly affects flight safety. At the same time, it will also increase the occupancy time of the cabin passage, resulting in the backlog of subsequent passengers waiting, affecting the entire boarding efficiency and order, and may lead to flight delays.

Extended data

China Hainan Airlines free checked baggage amount:

Domestic routes: the weight of each piece of hand luggage does not exceed 5 kg, and the volume does not exceed 20×40×55 cm. You can carry 2 pieces in first class and 1 piece in business class or economy class.

International and regional routes: the weight of each piece of hand luggage does not exceed 10 kg, and the volume does not exceed 20×40×55 cm. Two pieces can be carried in first class and business class, and one piece can be carried in economy class/kloc-0.

References:

People's Daily Online: From now on, the airport will strictly check the size of carry-on luggage.