01The rules in detail
Gel ice packs and frozen water are allowed in carry-on only if solid at the checkpoint — slushy or partly melted means the 100 ml rule applies. Packs cooling medically necessary items or baby milk are exempt regardless of state. Frozen meat, fish and seafood are allowed at security but restricted by customs in many countries. Dry ice: up to 2.5 kg per passenger in carry-on or checked, in a package that vents CO2, marked, with airline approval.
02Tips
- Freeze packs hard and go straight to security.
- Check customs rules before flying with meat or seafood internationally.
03Frequently asked
Can I bring ice packs in my carry-on?
Yes, with limits. Ice packs must be completely frozen solid at screening to pass carry-on; partially melted packs are liquids. Frozen food follows the same rule. Dry ice is allowed with limits (2.5 kg, vented package, airline approval).
Can I pack ice packs in checked luggage?
Yes. Ice packs must be completely frozen solid at screening to pass carry-on; partially melted packs are liquids. Frozen food follows the same rule. Dry ice is allowed with limits (2.5 kg, vented package, airline approval).
Are the rules the same outside the US?
Mostly similar for liquids and batteries, which follow international standards, but sharp objects, tools, lighters and self-defense items vary widely by country. Check the departure airport's rules and the destination's laws.
TSA and other agencies allow officers to refuse any item they judge unsafe, and rules change. This page summarises published guidance as of the verified date; confirm on tsa.gov or your airport's site before packing anything unusual.