# Dry ice (2.5 kg / 5.5 lbs or less, packing perishables) — Postal shipping restrictions by item category

For Dry ice (2.5 kg / 5.5 lbs or less, packing perishables), carrier is FAA (air transport); restriction type is restricted; scope is carry-on and checked baggage; conditions is Airline approval required; packages must not be air-tight and must allow the release of carbon dioxide gas; checked packages must be marked with contents and quantity, recorded from its source on 2026-08-10.

- **Item category:** Dry ice (2.5 kg / 5.5 lbs or less, packing perishables) _(verified: appears in the quote below)_
- **Carrier:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** carry-on and checked baggage _(our reading, not quoted from the source)_
- **Conditions:** Airline approval required; packages must not be air-tight and must allow the release of carbon dioxide gas; checked packages must be marked with contents and quantity. _(verified: appears in the quote below)_

## What the source says

> Airline approval is required. Packages must NOT be air-tight and must allow the release of carbon dioxide gas.

## Source

- https://www.faa.gov/hazmat/packsafe/printable-chart

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).