Can you fly with THCA flower?
TSA rewrote its marijuana page on April 27 and dropped its hemp sentence. What the agency says now, what federal and state law say, and what changes on Dec. 11. Checked Oct. 3.
The short answer. As of Oct. 3, 2026, TSA says it does not search for drugs, but its officers refer “any illegal substance” they find to law enforcement (TSA). THCA flower at or under 0.3 percent delta-9 THC is hemp under federal law until Dec. 11, 2026. Whether it is legal on your trip is decided by the law of the airport’s state and the state you land in.
WASHINGTON — Travelers asking whether they can fly with THCA flower are really asking three questions: what the checkpoint will do, what federal law says about the bag, and what the state at each end of the flight says. The answers differ, and one of them changed this spring.
What TSA’s page said, and what it says now
TSA’s “What Can I Bring?” entry for medical marijuana was rewritten on April 27, 2026, five days after the Acting Attorney General signed the order moving state-licensed medical marijuana to Schedule III (91 FR 22714). The desk compared archived copies.
| Before (last updated June 5, 2019) | Now (last updated April 27, 2026) | |
|---|---|---|
| Carry-on and checked bags | Yes (Special Instructions) | Yes (Special Instructions) |
| Federal law sentence | “Marijuana and certain cannabis infused products, including some Cannabidiol (CBD) oil, remain illegal under federal law except for products that contain no more than 0.3 percent THC on a dry weight basis or that are approved by FDA.” | Removed |
| Drug searches | Officers “do not search for marijuana or other illegal drugs” | Officers “do not search for illegal drugs” |
| If something is found | Refers the matter to a law enforcement officer | Refers the matter to a law enforcement officer |
| Source | Archived April 22, 2026 | Live page |
The page does not mention hemp or THCA at all now. TSA has no separate entry for CBD or hemp in its current list. Every version ends the same way: “The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.”
Federal law: hemp now, marijuana from Dec. 11
Through Dec. 10, federal law defines hemp by delta-9 THC alone at 7 U.S.C. 1639o. Flower whose lab report shows 0.3 percent delta-9 or less is hemp, whatever its THCA. On Dec. 11, Section 781 of Public Law 119-37 starts counting THCA, and most THCA flower becomes marijuana under the Controlled Substances Act. The April rescheduling order covers only FDA-approved drugs and marijuana held under a state medical license, so hemp-lane flower that loses hemp status stays in Schedule I. Our hemp ban tracker has the dates.
State law: two airports, two answers
A TSA checkpoint is a federal screening point, but TSA hands what it finds to “a law enforcement officer,” and that officer may enforce state law as well as federal law. That makes the departure and arrival states decisive.
| Trip | Through Dec. 10, 2026 | From Dec. 11, 2026 |
|---|---|---|
| Both states leave the hemp-retail lane open | Federally hemp if delta-9 is 0.3% or less; state law permits it | Federally marijuana; whether state law follows depends on how each state’s hemp statute is written |
| Arrival state bans THCA as hemp (for example Tennessee, Texas, California) | Federally hemp, but sale or possession may break the arrival state’s law | Federally marijuana and banned in the hemp lane at arrival |
| Arrival state bans possession of smokable hemp (Alabama) | Possession of raw flower is itself an offense under Alabama’s HB 445 | Same, and federally marijuana |
| Any international flight | Advised against by the State Department | Advised against |
For Alabama, the attorney general’s office said that selling or possessing smokable hemp on or after July 1, 2025, could be prosecuted as a Class C felony (WBRC, June 13, 2025); see our Alabama page. Tennessee, Texas and California details are on our Tennessee, Texas and California pages. The full 51-row table is in Is THCA legal?
A medical card does not settle the question either. It is issued under one state’s law, and whether another state honors it is for that state to decide.
International flights
On Sept. 8, 2026, the State Department’s Bureau of Consular Affairs told travelers: “Do not travel internationally with cannabis or cannabis-derived products, including marijuana, THC, CBD, edibles, vape cartridges, oils, concentrates, or other cannabis products” (Marijuana Moment, Sept. 9). It added: “Just because a cannabis, THC, or CBD product is legal in your home state does not mean you can take it abroad. This includes prescribed medical marijuana.”
What a lab report does and does not do
A certificate of analysis showing 0.3 percent delta-9 or less documents that the flower met the federal hemp definition on the day it was tested. It does not change the arrival state’s law. After Dec. 10 it also stops showing federal compliance, because the total THC line becomes the one that counts. For mail and parcels, see our companion explainer, Can THCA be shipped?
Sources
- TSA, Medical Marijuana, updated April 27, 2026, and the April 22, 2026 archived copy
- 91 FR 22714, Schedule III order for FDA-approved and state-licensed medical marijuana
- P.L. 119-37, sec. 781, and 7 U.S.C. 1639o
Last reviewed Oct. 3, 2026. This is reporting, not legal advice. Ask a lawyer licensed in your state.
Questions readers asked
Can you fly with THCA flower?
As of Oct. 3, 2026, TSA says its officers do not search for illegal drugs but refer any illegal substance they find to law enforcement. THCA flower at or under 0.3 percent delta-9 THC is hemp under federal law until Dec. 11, 2026, but the law of the departure and arrival states still applies, and several states ban it.
Does TSA test for THCA?
TSA says its screening is designed to detect threats to aviation, not drugs. Its officers do not search for marijuana or other drugs, and the agency's published guidance says nothing about testing for THCA.
Can I fly with THCA after Dec. 11, 2026?
From Dec. 11, flower above 0.3 percent total THC, counting THCA, is marijuana under federal law. Unless it is held under a state medical license, it remains a Schedule I controlled substance, and TSA refers illegal substances it finds to law enforcement.
Can I take THCA or CBD on an international flight?
No. On Sept. 8, 2026, the State Department advised Americans not to travel internationally with cannabis or cannabis-derived products, including THC and CBD, and said that a product being legal in your home state does not mean you can take it abroad, prescribed medical marijuana included.
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