It is allowed to bring water bottles and thermos cups on the plane, but the following flight rules should be noted:
1. It must be an empty cup
Water or thermos cups must be kept empty during security checks and must not contain any liquids. This is because the regulations for carrying liquid items on airplanes are very strict. Except for special passenger needs and cosmetics that women must carry (and the capacity of a single container bottle cannot exceed 100ml), other liquids are not allowed to be carried on board the plane.
2. Material requirements
The material of the water cup or thermos should be a normal material, such as plastic, нержавеющая сталь, стекло, и т. д.. These materials are not easily broken and can usually pass security checks. Water cups made of special materials or techniques, such as quicksand cups, double-layer insulated cups, и т. д., cannot be carried on airplanes due to the possibility of containing unknown liquids or special structures inside, and can only be checked in.
3. Capacity limitations
For insulated cups, domestic flights usually require a capacity of no more than 500 миллилитры, while international flights have even stricter regulations, with a capacity of no more than 100 milliliters for insulated cups. Поэтому, when choosing a thermos, it is important to pay attention to whether its capacity meets the regulations of the flight being flown.
4. Handling of consignment
If the capacity of the thermos exceeds the prescribed limit or cannot be carried with you for other reasons, you can choose to check it in. When checking in, it is necessary to ensure that the thermos cup is emptied and properly packaged to avoid damage or leakage during transportation.
5. Precautions for use
After passing the security check, hot water can be obtained indirectly from the tea in the waiting hall, or hot water can be requested from the flight attendant on the plane. Однако, please note that when using insulated cups on airplanes, it is necessary to ensure that there are no safety hazards such as burns to oneself or others due to high temperatures or liquid spills.
In summary, water bottles and thermos cups can be brought onto the plane while complying with the above flight rules. Passengers are advised to arrange their belongings according to their own needs to ensure safe and smooth travel.