For domestic flights, if you take domestic flights, the upper limit for individuals to carry cigarettes across the city is 50. Once this standard is exceeded, you need to apply to the tobacco company for a license. You can't take it on the plane without a permit. If passengers want to carry cigarettes with them on the plane, they must comply with the airline's regulations on carrying articles. Economy class passengers can only carry 5 kilograms of luggage for free at most, and only one piece can be carried. First-class passengers can carry up to 8 kilograms of luggage.

On international flights, each passenger can only carry two cigarettes on international flights, but the customs of different countries and the airlines they choose will have different requirements. If you enter the United States, passengers over 2 1 year old can only bring a pack of cigarettes or 50 cigars at most, and it is forbidden to bring Cuban tobacco products into the United States.

If you enter the UK, according to the relevant regulations, each passenger can only carry 200 cigarettes, or 250 grams of cut tobacco, or at most 50 cigars. In addition, some countries stipulate that you need to apply for tax payment when you carry more than the prescribed number of cigarettes.

Requirements for articles carried by aircraft:

1. Carry-on articles shall not exceed 20cm× 30cm× 40cm in size and 5kg in weight. There may be some differences in this standard for different airlines. Please refer to the resources at the end of this article for details.

2. The checked baggage varies according to the flight kilometers, but domestic airlines have regulations on the number of free checked baggage. Domestic flights generally have 30 kilograms of business class passengers, 20 kilograms of ordinary class passengers, and 50 kilograms of checked baggage for soldiers during their stay in the army.

3. Valuables that cannot be checked, such as jewelry, currency, negotiable securities, passports, gold, bankbooks of securities companies, jewelry and other valuables, cannot be checked and must be carried with you.

4. Alcoholic beverages cannot be checked. Cosmetics that can be taken by plane are self-use and travel clothes, but the container capacity of cosmetics cannot exceed 100 ml.

Some knives can't be taken on the plane, such as daggers, triangular knives and spring knives with self-locking devices.