Instead of fretting, I took this as a fashion exercise: Could I actually navigate my busy summer travels using only carry-on bags? Turns out I succeeded, and what I learned in the process is ...

Katherine Johnsen used a carry-on for 68 flights last year ... Common Ace.Packing cubes are for checked bags, unless they're compression ones.

A carry-on bag ensures you have your entertainment and snacks during the flight and all the essentials at your destination, even if your checked luggage gets lost. Items like passports ...