Guide

Yes, you can bring lithium batteries in carry-on; spares need covered terminals, ≤100 Wh (101–160 Wh with airline OK); never loose in checked.

Yes, you can pack liquor in checked luggage if it’s under 70% ABV, in retail packaging, and within airline, country, and duty limits.

Yes—liquid medicine is allowed in carry-ons in reasonable amounts; tell security and separate it from your 3-1-1 liquids.

Yes, you can bring liquid milk on a plane; carry-on follows 3-1-1 unless it’s for an infant or toddler, which may travel in larger declared amounts.

Yes, you can bring an instrument on a plane when it fits in cabin stowage or you buy a seat; oversized pieces may travel checked in a sturdy case.

Yes. Knives can go in checked luggage, not carry-ons; sheath or wrap blades, and follow airline and destination laws on possession.

Yes, you can bring liquid in carry-on if each container is 3.4 oz/100 ml or less and all fit in one quart-size bag; medical and baby items are exempt.

Yes, you can bring liquids in a carry-on if each bottle is 3.4 oz (100 ml) or less and all containers fit inside one quart-size clear zip-top bag.

Yes, you can bring liquids in carry-on bags if each container is 3.4 oz/100 ml or less and all fit in a single quart-size, clear, zip-top bag.

Yes, whole lemons are allowed in carry-on on U.S. domestic flights; rules change for liquids and for quarantine zones or border control.