8 TSA-Approved Items That Still Surprise Seasoned Travelers

8. Breast Milk and Formula in "Reasonable Quantities" (No 3.4 oz Limit)

Parents flying with infants get a major exemption: breast milk, formula, and juice for babies are exempt from the 3.4-ounce liquid rule. TSA allows "reasonable quantities"—which they define as enough for the flight and a buffer. You don't even need the baby present, meaning pumping parents can travel solo with bottles in tow. These items require separate screening: inform officers at the start, and they'll test them separately. Ice packs keeping milk cold must be frozen solid, but gel ice packs are also permitted if needed. It's one of the most parent-friendly TSA rules, though it still surprises travelers who assume everything liquid is restricted. Fly fed, fly informed.