AP Photo / Brian McDermott
Size requirements vary from airline to airline. Most allow each passenger to walk on to a plane with a small carry-on that can be stowed under the seat (a purse or a laptop computer bag), and a compact bag for the overhead luggage compartment. Beware: Some carriers have strict size requirements and aggressively enforce a one-bag rule, which means that your excess baggage will be tagged, taxed and re-routed as you board the plane. Likewise, trains and buses may also have weight and size requirements, with additional fees for excess weight. 
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Long lines, missing luggage and excess-baggage fees represent hidden travel taxes during holidays, short excursions and international vacations. Whenever possible, reduce tolls and stress with a one-bag strategy. This packing plan — which also works for train and auto trips — saves money, while reducing stress and excess weight.
— By Sharon Harvey Rosenberg and Myscha Theriault, McClatchy-Tribune News
