Do I have to declare dry ice (carbon dioxide, solid) at Thailand customs?

Only above the allowance. Up to 2.5 kilograms of dry ice (carbon dioxide, solid) there is nothing to declare; beyond it you take the goods through the red channel and pay the duty.

What happens if I do not declare dry ice (carbon dioxide, solid) in Thailand?

If you declare the excess yourself, a flat-rate charge is applied to the excess. An administrative fine is imposed. If the goods are found without being declared, an administrative fine is imposed.

Can I post or ship dry ice (carbon dioxide, solid) to Thailand instead of carrying it?

Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead.

Can I take dry ice (carbon dioxide, solid) out of Thailand?

Thailand publishes no separate rule for taking dry ice (carbon dioxide, solid) out; the destination's rules are what will apply.

Does the Thailand limit for dry ice (carbon dioxide, solid) apply per person or per family?

Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.

Where does this rule come from?

The Customs Department (Thailand) states it in List of Dangerous Goods may be carried by passenger or crew. CarryRules last confirmed that sentence at the source on 2026-09-19. The sentence it rests on reads: “Quantity limit: 2.5 kg (5.5 lbs) per package and per passenger. Airline approval is required.”

How does Thailand compare with other countries on dry ice (carbon dioxide, solid)?

Of the 20 countries covered here, 0 prohibit dry ice (carbon dioxide, solid), 12 limit it and 8 let it through. Thailand is among the ones that set a limit.

How much Dry ice (carbon dioxide, solid) can I bring into Thailand?

Restricted

You can bring Dry ice (carbon dioxide, solid) into Thailand only within the stated limits.

Carried Limited

Declaration Above allowance

Limit 2.5 kilogram

What you need to know

2.5 kilogram (5.51 lb)
Channels: Carried with the traveler

Important

This allowance applies per person, not per family or group.

Official sources

Last verified 2026-09-19

List of Dangerous Goods may be carried by passenger or crew The Civil Aviation Authority of Thailand (CAAT)

Questions about Dry ice (carbon dioxide, solid) in Thailand

How much dry ice (carbon dioxide, solid) can I bring into Thailand?: Thailand allows 2.5 kilograms of dry ice (carbon dioxide, solid) per traveller. Above that the goods are treated as an import and duty becomes payable. The allowance is per traveller and cannot be pooled between people.
Do I have to declare dry ice (carbon dioxide, solid) at Thailand customs?: Only above the allowance. Up to 2.5 kilograms of dry ice (carbon dioxide, solid) there is nothing to declare; beyond it you take the goods through the red channel and pay the duty.
What happens if I do not declare dry ice (carbon dioxide, solid) in Thailand?: If you declare the excess yourself, a flat-rate charge is applied to the excess. An administrative fine is imposed. If the goods are found without being declared, an administrative fine is imposed.
Can I post or ship dry ice (carbon dioxide, solid) to Thailand instead of carrying it?: Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead.
Can I take dry ice (carbon dioxide, solid) out of Thailand?: Thailand publishes no separate rule for taking dry ice (carbon dioxide, solid) out; the destination's rules are what will apply.
Does the Thailand limit for dry ice (carbon dioxide, solid) apply per person or per family?: Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.
Where does this rule come from?: The Customs Department (Thailand) states it in List of Dangerous Goods may be carried by passenger or crew. CarryRules last confirmed that sentence at the source on 2026-09-19. The sentence it rests on reads: “Quantity limit: 2.5 kg (5.5 lbs) per package and per passenger. Airline approval is required.”
How does Thailand compare with other countries on dry ice (carbon dioxide, solid)?: Of the 20 countries covered here, 0 prohibit dry ice (carbon dioxide, solid), 12 limit it and 8 let it through. Thailand is among the ones that set a limit.

Related items

Accompanied cash Accompanying goods, non-commercial (flat-rate band) Agricultural/forestry/fishery/livestock products (general sub-cap) Alcohol and alcoholic beverages above 22% vol (or undenatured ethyl alcohol 80% vol and over)

Related countries

Australia Canada China France

Other items in this group

Antique and replica weapons Banned knives and edged weapons Buddha images, artifacts/objects, antiques CITES-protected species and products Cigarettes, tobacco and alcoholic beverages (commercial import, Excise Department permit) Consumer fireworks