
While TSA officers are required to report any suspected violations of law to local, state, or federal authorities, they do not search specifically for marijuana or other illegal drugs. Instead, their screening procedures are designed to detect potential threats to aviation and passengers. In the United States, airports and airplanes follow federal marijuana laws, which classify marijuana with over 0.3% THC as a Schedule I drug. As a result, it is illegal to fly with marijuana products such as tinctures that contain more than 0.3% THC. However, products with less than 0.3% THC, such as CBD gummies with an extremely low dose of THC, are typically allowed. Additionally, security dogs at airports are no longer trained to detect the odor of marijuana, and the primary focus of TSA agents is on terrorist threats rather than drug violations.
| Characteristics | Values |
|---|---|
| THC tinctures allowed in airports | THC content should be less than 0.3% |
| Legality of carrying THC tinctures in airports | Illegal under federal law; some states have legalised it |
| TSA's stance on THC tinctures | TSA officers do not search for marijuana or other illegal drugs |
| Security checks for THC tinctures | Security dogs are not trained to detect the odour of marijuana |
| THC tinctures in liquid form | Allowed if it does not exceed TSA's limit for carry-on liquids |
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$13.5
What You'll Learn

THC tinctures are illegal under federal law
Despite this federal prohibition, many states have reformed their cannabis laws, creating a complex legal landscape. Over three dozen states allow access to marijuana products, and 18 states and Washington, D.C., have legalised cannabis for all adults. This has resulted in a situation where millions of Americans can legally consume marijuana under state law but remain in violation of federal law.
The discrepancy between state and federal laws has significant implications for individuals travelling with THC tinctures, particularly when passing through airports. While TSA security stations abide by federal laws, their primary focus is on security threats rather than drug possession. TSA officers are not actively searching for marijuana or other illegal drugs, and security dogs are no longer trained to detect the odour of marijuana. However, if any illegal substance is discovered during screening, TSA will refer the matter to law enforcement.
It is important to note that airport security procedures and marijuana policies can vary depending on the state and airport in question. For example, the Los Angeles Airport Police Division's procedures were updated to reflect California's legalisation of marijuana for individuals 21 years of age or older. Similarly, New York airports allow possession of less than three ounces of marijuana. Passengers are advised to check the specific laws of the states they are travelling to or from to ensure compliance.
Efforts have been made to reconcile the differences between federal and state laws regarding cannabis. The 2018 Farm Bill removed hemp, defined as cannabis with a THC concentration of 0.3% or less, from the Controlled Substances Act. Additionally, the Marijuana Opportunity, Reinvestment, and Expungement (MORE) Act, which aims to end the federal prohibition of cannabis, was reintroduced in 2021 and passed by the House of Representatives in 2020. However, as of now, THC tinctures remain illegal under federal law, and individuals risk criminal charges if found in possession of these substances at federal security checkpoints.
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TSA officers don't search for marijuana
Although marijuana is illegal under federal law, TSA officers do not search for it. This is due to a variety of factors, including the normal focus of security screenings, the legalization of marijuana in some states, and the limited resources available for enforcement.
TSA officers are required to report any suspected violations of the law to local, state, or federal authorities. However, their screening procedures are focused on security and detecting potential threats to aviation and passengers. As a result, they do not specifically search for marijuana or other illegal drugs. If an illegal substance is discovered during screening, TSA will refer the matter to law enforcement.
The TSA's stance on marijuana reflects a practical response to the changing legal landscape surrounding marijuana in the United States. While marijuana remains illegal at the federal level, many states have legalized it for adult use or medicinal purposes. This has created a patchwork of varying marijuana laws across the country, making it challenging for TSA officers to enforce federal marijuana laws consistently.
Additionally, airport security's primary concern is keeping people safe from terrorist or other threats. With the increasing legalization and normalization of marijuana, there are limited resources available for enforcing marijuana possession laws. Security dogs at airports, for example, are no longer trained to detect the odor of marijuana.
It is important to note that TSA officers are still required to notify law enforcement if a substance that appears to be marijuana is observed during screening. The consequences of being caught with marijuana at an airport can vary depending on the airport and the amount of cannabis involved. Some airports, like Seattle-Tacoma Airport and Portland International Airport, allow passengers to carry marijuana within the state's legal limit. In contrast, others, like McCarran International Airport in Las Vegas, have local ordinances that prohibit marijuana possession, even if it is legal in the state.
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Airport security dogs don't detect marijuana
While drug-sniffing dogs are frequently used at airports, they are no longer trained to detect marijuana. This is due to the normalisation of cannabis, which would be commonly detected on passenger clothing and is not considered a security threat. The core purpose of security dogs in airports is to keep people safe from terrorist or other harmful threats, such as explosives or firearms.
Transport Security Administration (TSA) officers do not search for marijuana or other illegal drugs, and marijuana is only illegal under federal law if it contains more than 0.3% THC. TSA officers are required to report any suspected violations of the law to the relevant authorities, but their screening procedures are focused on security threats.
In the state of California, it is legal for individuals over 21 to possess up to 28.5 grams of marijuana and 8 grams of concentrated marijuana for personal consumption. TSA screening stations are under federal jurisdiction, but passengers should be aware that marijuana laws vary from state to state.
Although airport security dogs do not detect marijuana, they are trained to detect a range of other dangerous substances, including explosives, firearms, and even the Covid-19 virus. These highly trained dogs work with their handlers in silence, covertly indicating when they have identified a suspect or suspicious luggage.
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Marijuana laws vary by state
While TSA security stations abide by federal laws that classify marijuana with over 0.3% THC as a Schedule I drug, the TSA has clarified that its workers do not search for marijuana. This is because the main security concern for TSA agents is terrorist threats. Additionally, security dogs at airports are no longer trained to detect the odour of marijuana.
As of June 2025, cannabis is legal in 39 of 50 states for medical use and 24 states for recreational use. Statewide legalization of recreational cannabis was on the ballot for the 2024 elections in Florida, North and South Dakota, but it failed to pass in all three states. However, a ballot measure related to medical cannabis passed in Nebraska. It is important to note that marijuana laws and penalties are ever-changing, and specific state statutes should be consulted for the most up-to-date information.
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Medical marijuana patients have been stopped at airports
While TSA agents are not searching for marijuana or other illegal drugs, and security dogs are no longer trained to detect the odor of marijuana, medical marijuana patients have been stopped at airports. This is because TSA security stations are under federal jurisdiction and abide by federal laws, which classify marijuana with over 0.3% THC as a Schedule I drug. If an illegal substance is discovered during security screening, TSA will refer the matter to a law enforcement officer.
Some airports have their own rules or warnings about carrying marijuana. For example, Denver International Airport in Colorado and McCarren International Airport in Las Vegas prohibit marijuana on their property. In contrast, California law allows individuals 21 years of age or older to possess up to 28.5 grams of marijuana and 8 grams of concentrated marijuana for personal consumption. Reflecting this change, the Los Angeles Airport Police Division (APD) updated its policies, and its officers will not arrest individuals complying with state law.
Passengers should be aware that marijuana laws vary from state to state and country to country. For example, Dubai has a zero-tolerance policy for cannabis in any form, and transiting through such countries with medical cannabis could result in severe legal consequences. Therefore, it is essential to research the laws of the states and countries you plan to travel through and confirm with your airline before traveling to avoid surprises at the airport.
If you are questioned by authorities, present your prescription, ID, and any supporting documents, such as a travel letter. Keeping everything in its original packaging can help demonstrate that your medication is legal and prescribed. Scanners or detectors at transportation hubs can pick up organic material, including medical cannabis. Therefore, never attempt to conceal your medication, as this can lead to serious consequences.
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Frequently asked questions
No, according to federal law, having any marijuana products that contain more than 0.3% THC is illegal.
TSA officers are required to report any suspected violations of the law to the authorities. However, they are trained to detect potential threats to aviation and passengers, not to look for illegal drugs.
No, even if your THC tinctures are legal in your state, they are technically illegal to bring on a plane.
If you are caught with THC tinctures at a US airport, it is unlikely that you will be arrested, but you may be stopped and your products confiscated. However, the consequences of carrying cannabis overseas can be severe, as demonstrated by the case of American basketball player Brittney Griner.







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