10. Pack efficiently

In today's age of plentiful airline fees, putting together a well-packed bag will save you money. Fees for overweight bags currently range from $17 to $175, and oversized bags can set you back $29 to $150. By making sure you don't exceed size and weight limits, you won't get any surprises at the ticket counter. And nowadays, with many airlines charging just to check a bag, you can save even more by taking just a carry-on.