A: I heard that the airlines are changing the luggage restrictions, and I need to find out what they are. B: There are online sites that list the general restrictions of the airlines. A: Because I fly a lot, I need to pack in a way that will be suitable for most airlines. B: Except for the discount carriers, you almost always have to pay a fee for checked baggage if you fly economy within the U.S. A: Do they charge a fee for baggage on an international flight? B: Almost all international carriers charge for excessive luggage. You are limited in weight and size. A: Is carry-on luggage allowed? B: You are restricted in what you may carry on. You almost always can bring one small piece for free. A: What do you think is the most important thing to remember when packing for a trip? B: Pack lightly! You don't want to haul around or pay fees on things that aren't essential.