Start with a Carry-On
Unless you're traveling with kids, we argue that you don't need to bring more than you can fit in a carry-on. Limiting yourself to a suitcase that will fit in the overhead compartment is a surefire way to force yourself to pack more efficiently. Consult our Ultimate Guide to Carry-on Luggage to see which size suitcase you're allowed to bring on board. Bonus: You'll pack lighter, save money (if you're flying an airline that charges for checked bags), eliminate waiting time at the luggage carousel, and never lose your bag again.