Can you bring ice packs or dry ice on a plane? TSA rules
The short answer
Yes, if they are frozen solid when screened. TSA treats partly melted ice as a liquid under the 3-1-1 rule. Dry ice is limited to 5.5 pounds, must be vented and marked, and needs airline approval.
Ice and gel ice packs
TSA lists ice and gel ice packs as allowed in carry-on and checked bags, with special instructions for carry-on. Frozen liquid items are allowed through the checkpoint as long as they are frozen solid when presented for screening. If they are partially melted, slushy, or have any liquid at the bottom of the container, they must meet the 3-1-1 liquids requirements.
Medically necessary ice packs
TSA says medically necessary gel ice packs in reasonable quantities are allowed regardless of their physical state, for example melted or slushy, with or without breast milk. Notify the TSA officer at the checkpoint for inspection.
Dry ice
- TSA lists dry ice as: check with the airline, for both carry-on and checked bags.
- The FAA limits you to 5.5 pounds of dry ice.
- The package must be vented and marked.
- Airline approval is required.
At the checkpoint
The final decision always rests with the TSA officer at the checkpoint.
Sources: TSA: Gel Ice Packs, TSA: Ice, TSA: Dry Ice. Read 5 November 2026. Rules and fees change, so check the official page before you travel.
Frequently asked questions
Can I bring a frozen ice pack through security?
Yes, if it is frozen solid when presented for screening, according to TSA.
What if my ice pack has melted?
TSA says partly melted or slushy items must meet the 3-1-1 liquids rules, unless they are medically necessary ice packs.
How much dry ice can I fly with?
The FAA limits you to 5.5 pounds of dry ice that is properly packaged, vented and marked. Airline approval is required.
Do I need airline approval for dry ice?
Yes. TSA says airline approval is required.