Each country and airline has its own luggage regulations. Checking directly with the airlines is the best way to know for sure what is allowed/prohibited. Below are a few general guidelines to give you a starting point when planning for a trip.
Shortly after the 9/11 attacks, liquids became restricted in carry-on luggage on many international flights. Travel to and from the United States requires the following to be observed regarding liquids and gels:
One plastic, zip-top, quart-sized bag per person. Each bottle must be 3.4 oz. or less. These liquids are to be placed and zipped in the bag, and the bag pulled out separately for inspection at security.
Exceptions include: some medicines, baby formula and breast milk. These items will be screened separately.
Sharp objects, weapons, knives, hazardous chemicals, explosives, tools and heavy, potentially hazardous objects are prohibited as carry-ons. So is sports equipment such as baseball bats, golf clubs and hockey sticks.
Most of these items can be checked, but if you have doubt, call ahead.
Most airlines allow one personal item, such as a small purse or laptop, and one small piece of luggage to be carried on the flight. Every airline has different size restrictions for carry-ons.
Weight restrictions for checked baggage range from 40 to 50 lbs., but smaller international carriers may have even tighter restrictions. The number of pieces per person varies greatly, as well. Charges for overweight luggage can be steep, so check ahead.
With the liquids policies in place, it may be more difficult to bring certain food and beverages from home. You will often have an opportunity to purchase food or drink before boarding the plane. Wrapped gifts will need to be unwrapped before going through security. You also may buy duty-free items such as perfumes or liquor, but these will be given to you at the gate or on board the plane. Remember to comply with customs regulations.
Be advised that the lock you place on your luggage may be cut off during the screening process.
