Can You Pack Dry Ice in a Bag for a Flight?

Only a small amount, in a package that can vent, with airline approval.

Published October 29, 2026 · 3 min read · Topic: Travel & Airline Rules · Travel rules

Typical situation

You want to take frozen food on a flight in a cooler bag and have heard that dry ice is allowed, but you are not sure how to pack it.

Main answer · berabags Editorial Team · Safety view

Yes, but only in small amounts, and only with airline approval. The FAA allows passengers to carry up to 5.5 pounds (2.5 kg) of dry ice for packing perishable items in carry-on or checked baggage, as long as the package allows the carbon dioxide gas to escape. TSA says the airline must approve it.

What the rules require

The dry ice must not exceed 5.5 pounds (2.5 kg) per passenger.
The package must be designed to vent, not sealed airtight, because the gas can build up.
The package must be marked to show it contains dry ice and the net weight.
The airline must approve it, so check before you go.

How to pack

Ask the airline whether they accept dry ice and under what conditions.
Weigh the dry ice and keep it below the limit.
Use a non-airtight cooler or insulated bag, and wrap the dry ice so it does not touch food directly.
Mark the package with the words “Dry ice” and the weight.
Use gloves when handling it.

Why the venting matters

Dry ice is solid carbon dioxide. As it warms, it turns directly into gas. In a sealed container, the pressure can rise and damage the container. In a closed cabin or car, the gas can build up and displace air.

Where this answer stops

This is general guidance based on the FAA and TSA pages. Airlines can be stricter than the FAA, and you should follow the instructions of your airline. This answer does not cover shipping dry ice by freight or mail.

Sources and further reading

Three more perspectives

berabags Editorial Team · Selection view

Choose a container that is not airtight. A soft cooler bag with a loose closure vents more easily than a hard box with a tight lid, but check with the airline whether the container you want to use is acceptable.

berabags Editorial Team · Maintenance view

Dry ice is extremely cold and can burn skin and damage a bag lining. Use gloves to handle it, put it in a paper bag or wrap it in newspaper, and never put it in a sealed bag or a tightly closed plastic container.

berabags Editorial Team · Risk view

Dry ice turns into carbon dioxide gas, which can build up in a closed space. Keep it out of closed rooms and cars, and do not let it sit in a sealed bag. If you are not sure, ask the airline before you travel.

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