What Are Carry-On Restrictions for International Flights
International carry-on restrictions follow TSA 3-1-1 liquid rules (containers 3.4oz or smaller in 1 quart bag), prohibit sharp objects and large electronics over laptop size, and limit bags to roughly 22x14x9 inches weighing under 15-22 pounds depending on airline.
- Check your airline's size and weight limits. Most international carriers allow 22x14x9 inches (56x36x23cm) but some budget airlines are smaller. Weight limits range from 15-22 pounds. Check your specific airline's website before packing.
- Pack liquids in 3-1-1 format. All liquids, gels, and aerosols must be in containers 3.4oz (100ml) or smaller, fit in one clear quart-sized bag, and be easily removable at security. This includes toothpaste, shampoo, and contact solution.
- Remove prohibited sharp objects. No knives, scissors over 4 inches, razor blades, or tools longer than 7 inches. Small nail clippers and tweezers are usually fine but check current TSA lists as rules change.
- Prepare electronics for screening. Laptops and tablets larger than a phone must be removed from bags at most security checkpoints. Keep chargers and cables organized for easy inspection.
- Pack medications and essentials smartly. Prescription medications can exceed liquid limits but declare them at security. Pack a change of clothes and essential medications in carry-on in case checked bags are delayed.
- Can I bring food in my carry-on?
- Yes, but solid foods are easier than liquids. Sandwiches, fruit, and snacks are fine. Yogurt, soup, and sauces count as liquids and must follow 3-1-1 rules.
- Are carry-on rules the same worldwide?
- Mostly yes for size and liquids, but some countries have additional restrictions. Australia prohibits certain foods, and some Asian airports have stricter electronics rules.
- What happens if my carry-on is too big?
- Gate agents will make you check it, often for $50-100+. Size-check bins at check-in counters let you test your bag before security.
- Can I bring duty-free liquids on connecting flights?
- Only if they're in sealed tamper-evident bags from the airport shop. If you have to re-clear security on connections, regular liquid rules apply.