Marijuana is still not legal on airplanes, but…
Since marijuana is now legal for recreational or medicinal use in nearly 70 percent of the United States, albeit not under federal law, it's understandable there's been some confusion about whether it's "cool" to fly with your gummies from, say, Michigan to Massachusetts (marijuana is legal for recreation in both states). According to the TSA's "What Can I Bring?" guide (as well as its Instagram page), if a TSA agent suspects a substance is marijuana, they're legally required to notify law enforcement.
That should make things pretty clear, right?
Well, maybe not so much. The TSA also notes on that Instagram post (which begins, "Are we cool? We think we're cool") that it's not interested in looking for marijuana. Further, the TSA now expressly permits people to fly with marijuana- and CBD-infused products that contain no more than 0.3 percent THC and are produced legally under federal law. So, what's OK to bring? Right now, it would appear that any CBD product that contains little to no THC will pass muster. Same with the hemp-based epilepsy medication Epidiolex. All of that said, that's not to say the TSA won't involve law enforcement. It's just that if they do, you'll be well within your rights.
New Air Travel Rules You Need to Know About, Source:https://www.rd.com/list/new-air-travel-rules/