Budget travelers benefit greatly from understanding the Medidas Carry On JetBlue allows. A carry-on bag that fits the 22 x 14 x 9 inch (56 x 36 x 23 cm) limit helps you avoid costly gate-check fees and keeps your belongings close during the flight. Pair it with a compact personal item for extra space. Choose versatile clothing, mix and match outfits, and pack only what you truly need. Because airline policies can change, check JetBlue’s official website before every trip to make sure your luggage still meets the requirements.