Are wheels included in the measurement of international airline luggage size?

Those who count the wheels. But if the size is 158cm, overweight fees will basically be charged.

The size of the suitcase needs to include the wheels, because the wheels will occupy the same space when checked.

The size limit for suitcases when flying refers to the outline of the suitcase, which includes wheels, pull rods, etc., so 55cm corresponds to 21 inches, and a standard 20-inch suitcase is generally no problem. 22 inches is a bit difficult.

Extended information:

There are regulations for carrying and checking baggage

Regulations on passengers carrying liquid items: Passengers taking international/regional flights departing from airports in China , the volume of each liquid item they carry shall not exceed 100 milliliters (ml). Containers for liquid items should be placed in resealable transparent plastic bags with a maximum volume of no more than 1 liter (L). Each passenger is only allowed to carry one transparent plastic bag at a time, and the excess must be transported.

Common liquid items include:

1. Beverages, such as mineral water, drinks, soups and syrups.

2. Creams, lotions, oils, perfumes and cosmetics.

3. Spray and compressed containers, such as shaving foam and deodorant spray.

4. Paste-like items, such as toothpaste.

5. Contact lens solution.

6. Gels, such as gel products for hair styling and bathing.

7. Any solutions and items with similar consistency.

Baidu Encyclopedia--International Baggage Checking