TSA’s 3-1-1 for carry-ons = 3 ounce bottle or less; 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3 oz. container size is a security measure. Consolidate bottles into one bag and X-ray separately to speed screening.
Be prepared. Each time TSA searches a carry-on it slows down the line. Practicing 3-1-1 will ensure a faster and easier checkpoint experience. If in doubt, put your liquids in checked luggage.
Declare larger liquids. Prescription medications, baby formula, juice and milk (when traveling with an infant or toddler) are allowed in reasonable quantities exceeding three ounces and are not required to be in the zip-top bag. Declare these items for inspection at the checkpoint.
Come early and be patient. Heavy travel volumes and the enhanced security process may mean longer lines at security checkpoints.
Countries that are currently harmonized with TSA’s rules for carrying liquids through the checkpoint include: Australia, Austria, Belgium, Bulgaria, Brazil, Canada, Cape Verde, China, Cook Islands, Cyprus, Czech Republic, Denmark, Egypt, Estonia, Fiji, Finland, France, French Polynesia, Germany, Greece, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Marshall Islands, Malaysia, Maldives, Mauritius, Mexico, Micronesia, Morocco, Netherlands, New Zealand, Norway, Philippines, Poland, Portugal, Republic of Korea, Romania, Serbia, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Tunisia, Ukraine and the United Kingdom.