Aug 09th 2025

Traveling with Medical Cannabis: Essential Travel Guide 2025

Traveling with Medical Cannabis: Essential Travel Guide for Medical Cannabis Patients this Summer

August is peak travel season, and chances are, you’re packing your bags for some outdoor fun soon.

You’ve got your sunscreen, bug spray, and essential prescriptions. But if you’re like many travelers, you’re probably wondering how to bring medical cannabis without unwelcome surprises like misunderstandings with law enforcement.

In this quick guide, we’ll answer some of the most frequently asked questions about traveling with medical cannabis this summer, including:

• What documents should I carry with my medical cannabis products?
• Which states honor out-of-state medical marijuana cards?
• What kind of medical cannabis products can I travel with?
• Can you fly with medical cannabis in the US in 2025?
• Is it safe to bring medical cannabis during international travel?

Which documentation should you carry when traveling with medical cannabis?

Even if you aren’t planning to cross state lines, you’ll still want to bring the appropriate documentation when you’re traveling this summer. In addition to your medical marijuana card, you’ll need to carry a doctor’s letter outlining your condition and their reasons for recommending medical cannabis products.

Ideally, you should keep your medicine in unopened packages, including original labels and Certificates of Analysis (COAs) to confirm the contents and THC percentages. Most states also have limits on the quantity of medical cannabis you can purchase and carry with you at one time. For example, Illinois’ medical cannabis law limits registered patients to 2.5 ounces of dry flower or its equivalent in edibles or concentrates in any 14-day period.

We recommend printing out the regulations for your home state and each state you plan to visit. A downloaded version on your cellphone is also an excellent idea. Check out this example from Utah’s Department of Health to see the kind of documents you should travel with this summer.

You’ll also want to investigate local laws related to the possession of medical cannabis products. Some counties and cities maintain stricter rules than state laws. State and local regulations change frequently, so you’ll need to ensure that you have the most current version of the laws for each area you plan to visit.

Which states honor out-of-state medical marijuana cards?

As of June 2025, 40 states and Washington, D.C., allow patients to possess medical cannabis. However, not all of them will honor out-of-state medical marijuana cards.

Crossing state lines with prohibited cannabis products may be considered trafficking. In some states, possessing even a small amount could result in heavy fines or imprisonment.

We recommend that you consult the latest state laws regarding cannabis possession before you pack your medicine for interstate travel. You’ll find a handy map and up-to-date information on the National Conference of State Legislatures (NCSL) website. You’ll also want to check the official pages for each state and local jurisdiction you plan to pass through.

Can you fly with medical cannabis in the US in 2025?

Although many states have legalized cannabis for medical or recreational purposes, cannabis remains a Schedule I substance under the federal Controlled Substances Act. Schedule I includes potentially deadly narcotics like heroin and potent psychedelics such as LSD.

Since airports are considered federal territories, flying with medical cannabis products is a risky idea. Being caught with a Schedule I substance carries heavy penalties, even in an airport in a state with legalized medical and recreational cannabis.

TSA regulations require officers to report any suspected cannabis violations to local, state, or federal authorities. Penalties range from confiscation of products or travel delays to run-ins with local authorities or even detainment with criminal charges.

CBD and other hemp-derived products containing less than .3% THC are federally legal under the 2018 federal Farm Bill. However, travelers have still faced difficulties when carrying supposedly legal hemp products.

 

Is it safe to carry medical cannabis products when you travel internationally?

We highly recommend leaving your medical cannabis products at home during international travel. Many countries impose stiff fines or jail sentences on travelers possessing even small amounts of cannabis or CBD products.

You can’t count on the US embassy to protect you if you break foreign cannabis laws. In 2022, Olympic gold-medalist Brittney Griner narrowly escaped a 9-year sentence for having empty vape cartridges in her luggage while traveling through Russia. Her release involved a complicated prisoner exchange negotiation. The US embassy is unlikely to make a similar deal for an average citizen detained or convicted for possessing medical cannabis abroad.

Even if you’re visiting a country like Canada where cannabis has been legalized, you can be detained and prosecuted for possession of medical cannabis. The Canadian government prohibits crossing the Canadian border with any form of cannabis, including CBD oil. However, in extreme cases, patients with serious illnesses may apply for an individual exemption issued by Health Canada.

Stories of successful international travel with cannabis products abound on social networks. While these anecdotes may be amusing, we suggest that you ignore these stories and leave your medical marijuana at home when you travel abroad.

Conclusion: Should I travel with medical cannabis this summer?

Traveling with medical cannabis can cause anxiety, misunderstandings with law enforcement, or potential legal consequences. In summary, here are a few tips for traveling with medical cannabis this summer:

1. Investigate the most current medical cannabis regulations for the areas you intend to visit.
2. Keep medical cannabis products in their original packaging.
3. Maintain a current medical cannabis certification.
4. Carry the appropriate documents, including your medical card, product COAs, and printed copies of state and local cannabis regulations.
5. Don’t attempt to fly with cannabis products.

When in doubt, purchase your supplies after arriving at your destination. 79% of Americans live in a county with at least one dispensary, so odds are you’ll find the medical cannabis products you need once you arrive.

If you would like more information about getting your medical cannabis card or finding a dispensary near you, contact us at Compassionate Clinics of America. Our specialists offer a wide range of personalized services, including revolutionary Cannabis DNA Testing for a more customized medical cannabis experience.