Transporting Cremated Remains by Car, Mail, or Across State Lines

Moving cremated remains from one place to another sounds like it should be straightforward — they are in a sealed container, and you put them in your car. In practice, the process crosses into interstate transport regulations, postal service rules, and airline policies that most people do not know about until they are mid-trip with a container of ashes in the passenger seat.

Here is what you need to know for each method.

Driving With Cremated Remains

There is no single nationwide permit rule for driving with cremated remains. State requirements differ: California requires a Permit for Disposition when cremated remains are removed from the place of cremation or interment, while New York allows a recipient to transport cremains within the state without a permit. Check the rules in the states you are leaving and entering before travel.

That said, carry these documents:

• Certified death certificate (at least one copy)
• Certificate of cremation from the crematory
• A transit or disposition permit, if one was issued by the originating state

Carry any permit issued for the remains along with the death and cremation certificates. If an officer asks about the container, having the documents available can help establish what it contains.

Practical tips for the drive:

• Secure the container so it does not slide, tip, or spill. The temporary containers from crematories are not designed for travel — they are lightweight, and the lids can pop off if jolted. Place the container inside a box or bag with padding.
• If crossing an international border, check the destination country's customs and import requirements before travel.

Shipping Ashes by Mail

USPS is the only carrier that accepts cremated remains through regular mail. FedEx and UPS both prohibit shipping human remains (cremated or otherwise) through their consumer services.

USPS requirements for shipping cremated remains:

• Priority Mail Express only. This is mandatory, not optional. Standard Priority Mail, First Class, or Media Mail are not permitted.
• The inner container must be strong, durable, properly sealed, and sift-proof. Do not assume a temporary container qualifies unless it meets those requirements.
• The outer container must be USPS's Priority Mail Express Cremated Remains box (BOX-CRE). Cushion the inner container so it cannot shift during transit.
• Marking. Use the USPS Cremated Remains box and follow USPS's current address and labeling instructions.
• Extra services. USPS permits additional insurance and Return Receipt. Registered Mail is not available for Priority Mail Express items containing cremated remains.

Cost: Priority Mail Express rates apply. Use the USPS postage calculator for the package weight, dimensions, and destination.

USPS accepts international cremated-remains mail only when the destination country permits it and Priority Mail Express International is available. The package must include the required customs declaration, and the sender is responsible for any country-specific documentation.

Across State Lines: What Varies

State rules differ on what documentation must accompany cremated remains. Check the requirements in both the originating and destination states before departure.

A few states require specific documentation:

• California requires a Permit for Disposition to remove cremated remains from the place of cremation or interment. The permit must identify the final place of disposition; after disposition, the person named on it must return a copy to the local registrar within 10 days.
• New York allows the recipient of cremated remains to transport them within the state in any manner without a permit after the cemetery delivers them.

Before leaving, get your documents in order. If a permit was issued for the cremated remains, carry it with you.

What Not to Do

Do not ship via FedEx or UPS. Their terms of service prohibit shipping cremated human remains; use USPS for parcel mail.

Check international requirements before mailing. USPS accepts cremated remains by Priority Mail Express International only where the destination country permits them and the service is available; destination-country documentation rules also apply.

Check the airline's baggage rules before flying. Carry-on is recommended, and some airlines do not allow cremated remains in checked bags. TSA will screen the container by X-ray and will not open it; an opaque container may be refused.

Planning the Full Process

If you are transporting remains to a scattering site — whether by car across three states or by USPS to a family member who will perform the ceremony — the Scattering Ashes toolkit covers the document requirements, packing instructions, and a location-by-location breakdown of what permits you will need once you arrive.