While basic luggage policy for many airlines is similar, there are some distinct differences that the traveler needs to know. By checking these guidelines out ahead of time, you can avoid having to check a bag that was meant to be carried onboard. Remember, changes occur almost daily in luggage guidelines, so be sure to check with your carrier shortly before you trip.
Domestic Flights
Most major airlines in the United States now charge an extra fee for checked luggage, for those people traveling in economy class on domestic trips. The list of airlines includes Delta, Continental, United, Northwest and others. Travelers are allowed one carry-on bag that meets size regulations and one personal item, such as a handbag, briefcase or laptop, at no extra fee. Carry-on bags may weigh up to 40 or 50 pounds, depending on which carrier you're using.
The best deals on the amount of luggage that's permitted free of charge are found in the discount airlines, including Jet Blue, Southwest, Virgin America, Spirit and others since they dont charge extra for bags that are checked. The number of bags allowed without charge varies from airline to airline. Usually the maximum size of a checked-in bag is generally 62 inches (meaning the total inch count for the length, height and width of the bag) and may weigh up to 50 pounds.
A word about carry-on bags: if they have an odd shape, they might not be allowed because they may not fit in the overhead compartment. A traveler is supposed to be able to lift his or her carry-on and put it inside the overhead storage area, so don't make it too heavy. Make sure not to stuff the outer pockets, or the bag might exceed carry-on size restrictions.
International Flights
The rule of thumb is that more luggage is allowed when flying transatlantic from the United States. Most major carriers allow up to three pieces of luggage, with the weight and size varying according to what class the traveler is flying in. Passengers are allowed one personal item and one bag for carry-on, although those in first and business class may be allowed more according to the airline.
The same guidelines apply for the most part for flights to Asia and the South Pacific.
Other Considerations
On international flights, carriers ask that travelers not lock their luggage, unless they plan on using an approved lock that can be opened with a skeleton key, should a Transportation Security Administration officer wish to open it. If the lock cannot be opened, the lock will be broken and the bag opened.
Another point about packing is to carry on medications, important papers and items that can't be easily replaced. Place toiletries, perfumes, jewelry and clothes in your checked luggage.
As for film, don't pack in it a checked bag, since it will be damaged by the screening devices. Bring it in a carry-on, and ask to have it checked by hand rather than going through screening.