Can You Bring Dry Ice on a Plane?
Category: Gear & Miscellaneous
Direct Answer (2026 Official Rules)
Yes, with limits — you can bring dry ice in carry-on bags provided you follow security limits. Permitted in carry-on baggage through security checkpoints.
Verified against published 2026 TSA (United States) & CATSA (Canada) security screening databases.
| Authority | Carry-on | Checked | Official Rule & Condition | Source |
|---|---|---|---|---|
| 🇺🇸 TSA (US) | ⚠ LIMITED | ⚠ LIMITED | Sometimes — up to 5.5 lb of dry ice, in a vented package, and only with airline approval. Arrange it with your carrier first. | TSA.gov ↗ |
| 🇨🇦 CATSA (Canada) | ⚠ LIMITED | ⚠ LIMITED | Yes, with your carrier’s approval — up to 2.5 kg of dry ice in carry-on, packaged so carbon dioxide gas can escape. | CATSA ↗ |
Official Baseline: Dry Ice is permitted in carry-on (restricted) and checked baggage (restricted). Primary authority citation: TSA — Dry Ice.
On this page · 13 sections
⚖️ Why This Rule Exists: Cabin Security, Permitted Travel Gear & Checkpoint Standards
Non-bladed tools under 7 inches (18 cm), blunt items, and general travel gear that do not pose a cutting, impact, or hazardous materials risk are permitted in carry-on luggage.
Rules by security authority
United States — TSA
Cabin:
LIMITED
Sometimes — up to 5.5 lb of dry ice, in a vented package, and only with airline approval. Arrange it with your carrier first.
Hold:
LIMITED
Sometimes — the same 5.5 lb vented-package rule with airline approval applies to checked bags; the package must be marked appropriately.
Flying internationally? Security follows the country you depart from — the authority above applies at your departure airport. Customs at arrival is separate.
Dry Ice Capacity, Size & Spec Thresholds
Aviation security rules change depending on specific capacity, volume, or blade length. Check your exact variant:
| Variant / Spec | Threshold | Verdict | Rule & Required Action |
|---|---|---|---|
| Dry ice for perishables / medicines ≤ 5.5 lbs (2.5 kg) | ≤ 5.5 lbs (2.5 kg) per passenger (FAA / IATA) | ⚠ LIMITED | Permitted in carry-on or checked baggage with airline approval. Package must be vented to allow release of carbon dioxide gas. Action: Mark package with "Dry Ice" or "Carbon Dioxide Solid", net weight, and perishable contents. Notify airline at check-in. |
| Dry ice in airtight / unvented container or > 5.5 lbs | Unvented or > 2.5 kg | ✕ NO | Strictly prohibited due to gas buildup explosion hazards. Action: Use approved vented styrofoam or corrugated packaging only. |
How Many Dry Ice Can You Bring on a Plane?
Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.
Official regulatory posture: Where aviation authorities publish no individual numeric cap, standard carry-on dimensional and weight limits govern. Screeners retain statutory discretion to inspect bulk quantities.
🔍 Security Checkpoint & X-Ray Screening Advice
Place large metal tools in the screening bin alongside electronics if requested by screening staff.
Learn more about scanner differences and traveler rights in our Airport Security Screening Guide →
⚠️ Common Traveler Mistake to Avoid
How to Avoid It: Measure blade length: must be under 4 inches (10 cm in the US) or under 6 cm from pivot (in Canada).
Airline-Specific Rules & Carrier Baggage Limits
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
How to Pack Dry Ice for a Flight
Step-by-Step Traveler Decision Checklist
- 1 Placement Decision: Cabin: RESTRICTED | Checked Hold: RESTRICTED
- 2 Packing & Protection: Dry ice is how frozen seafood and game make it home intact: keep the cooler slightly open (vented, never sealed), stay under 5.5 lb, and get the airline to note the approval on your booking before airport day.
- 3 Checkpoint Protocol: Keep packed securely inside carry-on luggage.
- 4 Airline & Authority Boundary: Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Dry Ice on a plane — FAQs
Can you bring Dry Ice in a carry-on?
Sometimes — up to 5.5 lb of dry ice, in a vented package, and only with airline approval. Arrange it with your carrier first.
Can you pack Dry Ice in checked luggage?
Sometimes — the same 5.5 lb vented-package rule with airline approval applies to checked bags; the package must be marked appropriately.
Why are there rules for dry ice on a plane?
Non-bladed tools under 7 inches (18 cm), blunt items, and general travel gear that do not pose a cutting, impact, or hazardous materials risk are permitted in carry-on luggage.
How many Dry Ice can you bring on a plane?
Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.
Can you bring dry ice for perishables / medicines ≤ 5.5 lbs (2.5 kg) on a plane?
Permitted in carry-on or checked baggage with airline approval. Package must be vented to allow release of carbon dioxide gas. Mark package with "Dry Ice" or "Carbon Dioxide Solid", net weight, and perishable contents. Notify airline at check-in.
Can you bring dry ice in airtight / unvented container or > 5.5 lbs on a plane?
Strictly prohibited due to gas buildup explosion hazards. Use approved vented styrofoam or corrugated packaging only.
Can you bring dry ice on Southwest Airlines?
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Can you bring dry ice on Delta Air Lines?
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Do airlines have their own rules for dry ice?
Airline approval is mandatory — call ahead. Carriers apply their own procedures within the 5.5 lb / 2.5 kg cap, and some routes decline dry ice entirely.
Verified against
Last verified:
Verified against official sources. Rules change — for high-stakes items, confirm with your airline and the screening authority. Our verification method →
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<a href="https://canicarryit.com/can-i-bring/dry-ice/" target="_blank" rel="noopener">Dry Ice — TSA & Airline Baggage Rules (CanICarryIt.com)</a> [Dry Ice — TSA & Baggage Rules](https://canicarryit.com/can-i-bring/dry-ice/) "Can I Carry It? — Dry Ice Aviation Screening Regulations." CanICarryIt.com, verified 2026-07-30, https://canicarryit.com/can-i-bring/dry-ice/. Take a break: play Confiscated or Cleared